---
product_id: 102500167
title: "4 Inch Ceramic Utility Knife with Protective Sheath | Corrosion-Resistant Ceramic Blade, Bait Preparation Knife, Razor Sharp Cutting Edge, Ergonomic Non-Slip Handle"
brand: "rapala"
price: "¥5870"
currency: JPY
in_stock: true
reviews_count: 13
category: "Rapala"
url: https://www.desertcart.jp/products/102500167-4-inch-ceramic-utility-knife-with-protective-sheath-corrosion-resistant
store_origin: JP
region: Japan
---

# 4-inch ultra-sharp ceramic blade 15x longer sharpness vs steel Protective compression sheath 4 Inch Ceramic Utility Knife with Protective Sheath | Corrosion-Resistant Ceramic Blade, Bait Preparation Knife, Razor Sharp Cutting Edge, Ergonomic Non-Slip Handle

**Brand:** rapala
**Price:** ¥5870
**Availability:** ✅ In Stock

## Summary

> 🔪 Cut sharper, last longer — the ultimate utility knife for the modern adventurer.

## Quick Answers

- **What is this?** 4 Inch Ceramic Utility Knife with Protective Sheath | Corrosion-Resistant Ceramic Blade, Bait Preparation Knife, Razor Sharp Cutting Edge, Ergonomic Non-Slip Handle by rapala
- **How much does it cost?** ¥5870 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/102500167-4-inch-ceramic-utility-knife-with-protective-sheath-corrosion-resistant)

## Best For

- rapala enthusiasts

## Why This Product

- Trusted rapala brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Safe & Travel-Ready:** Includes a durable compression sheath for secure blade storage and easy transport—never compromise safety on the go.
- • **Stay Razor Sharp Longer:** Ceramic blade maintains peak sharpness up to 15x longer than traditional steel—cutting edge performance without the hassle.
- • **Trusted by Pros Worldwide:** Hand-tuned and tank-tested by fishermen, Rapala delivers unmatched quality and reliability for serious anglers and outdoor enthusiasts.
- • **Ergonomic Grip for Precision:** Soft molded handle ensures secure, comfortable control during bait prep, utility tasks, or meal prepping—work smarter, not harder.
- • **Rustproof & Ready for Adventure:** Non-porous ceramic resists corrosion, perfect for freshwater and saltwater environments—your go-to tool for any outdoor challenge.

## Overview

The Rapala 4 Inch Ceramic Utility Knife features a corrosion-resistant ceramic blade that stays sharp up to 15 times longer than steel. Designed with an ergonomic soft-grip handle and a protective compression sheath, it offers precision, safety, and durability for fishing, outdoor tasks, and kitchen prep. Trusted globally by anglers, this lightweight, ambidextrous knife is your reliable companion for any cutting need.

## Description

8. 13" overall. 3. 75" white ceramic drop point blade. Black rubber handle. Lanyard hole. Black nylon sheath. Clam packed.

Review: The Never-Rust Razor: Rapala 4" Ceramic Utility Knife - TLDR: Extremely sharp, corrosion-proof ceramic utility knife. Retains its edge exceptionally well, requires no sharpening, and is lightweight with a comfortable soft-grip handle. Excellent for fishing/bait prep, but ceramic blades are brittle and must be handled with care. I bought the Rapala Ceramic Utility Knife Black, 4" (RCUKB4) because I was tired of constantly dealing with rust and dull blades on my steel fishing and bait knives. The promise of a blade that is "2X sharper and 15X edge retainment" compared to steel, coupled with its completely corrosion-proof ceramic material, was exactly what I needed for a saltwater fishing environment. My initial thought was that this knife felt incredibly light—almost toy-like—but the molded soft-grip handle felt secure and comfortable in my hand, establishing confidence for use even when wet. My experience with the RCUKB4 has been fantastic, specifically for its intended purpose: cutting bait and light utility tasks around the boat. The blade is razor sharp and makes effortless, clean cuts through squid, fishing line, and softer materials. The corrosion resistance is genuine; after being exposed to saltwater and rinsed, there is absolutely no sign of rust or degradation, unlike my previous steel knives. The compression sheath is a small but crucial feature, holding the knife securely and safely for transport. The biggest mental hurdle is remembering that the ceramic blade, while incredibly hard and sharp, is also brittle. I avoid any twisting, prying, or chopping motions that could easily chip or snap the ceramic. This is a precision cutting tool, not a demolition tool. Pros Exceptional Sharpness: It is significantly sharper than standard steel utility knives right out of the box. Superior Edge Retention: The ceramic blade holds its edge for an incredibly long time, eliminating the need for frequent sharpening. 100% Corrosion Proof: Will never rust, making it perfect for marine and humid outdoor environments. Comfortable Handle: Molded soft-grip handle provides excellent non-slip control, even when wet. Secure Sheath: The compression sheath holds the knife tightly for safe storage and transport. Lightweight: Easy to carry in a tackle box or on a vest. Cons Brittle Blade: Ceramic is prone to chipping or breaking if dropped or used for prying or twisting motions. No Sharpening: While a pro, it's also a con—if you do manage to dull or damage the edge, sharpening ceramic requires specialized tools. Utility Limitation: Not suitable for heavy-duty tasks where force or bending is required. Verdict The Rapala 4" Ceramic Utility Knife delivers exactly what it promises: an unbelievably sharp, completely rust-free cutting tool that maintains its edge season after season. It's a game-changer for anyone dealing with bait, fishing line, or general utility cutting where corrosion is a problem. You must respect its ceramic nature and treat it as a precision cutting instrument, but if you do, it will reward you with superior performance. It is worth the price for its unparalleled sharpness and rust-proof properties. This knife is best for fishermen, boaters, and anyone needing a reliable, sharp, and lightweight utility knife in a wet environment. It earns a 5 star rating for excelling at its intended purpose.
Review: Great NPE defensive device - Excellent NPE defensive device..... non magnetic at any level, great sheath retention even upside down for many hours, very light weight, sheath is non metallic, very sharp, carried through many detectors both standing and wanded at private events----DO NOT CARRY IN A TRAVEL OR LEGAL ENVIRONMENT

## Features

- Long-Lasting Sharpness: Ceramic blade stays sharp up to 15 times longer than steel and never requires sharpening
- Corrosion Resistant: Lightweight, non-porous ceramic blade will not rust, making it ideal for freshwater and saltwater use
- Comfortable Grip: Ergonomic molded soft-grip handle provides secure control for bait preparation, utility cutting, and outdoor tasks
- Safe Storage: Includes protective compression sheath for secure blade storage and convenient transport in tackle boxes, boats, or packs
- Rapala: Anglers around the world put their faith in Rapala because of our dedication to the highest quality fishing lures, knives, tools and accessories. Hand-tuned, tank-tested, and crafted by fishermen for fishermen

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B076HY6HL8 |
| Age Range (Description) | Adult |
| Age Range Description | Adult |
| Best Sellers Rank | #96,351 in Sports & Outdoors ( See Top 100 in Sports & Outdoors ) #79 in Fishing Filet & Bait Knives |
| Blade Edge | V-Grind |
| Blade Length | 4 inches |
| Blade Material | Ceramic |
| Blade Shape | Drop Point |
| Blade Type | Ceramic |
| Brand | Rapala |
| Brand Name | Rapala |
| Color | Black |
| Customer Package Type | Standard Packaging |
| Customer Reviews | 4.6 out of 5 stars 330 Reviews |
| Global Trade Identification Number | 00022677286099 |
| Hand Orientation | Ambidextrous |
| Handle Material | Plastic |
| Included Components | Ceramic Utility Knife Black |
| Item Length | 14 inches |
| Item Shape | Rectangular |
| Item Type Name | fixed blade,hunting knife,outdoor,camping |
| Item Weight | 3.84 ounces |
| Manufacturer | Rapala |
| Model Name | NK28609 |
| Model Number | NK28609 |
| Number of Items | 1 |
| Part Number | NK28609-BRK |
| Power Source | hand_powered |
| Product Care Instructions | Hand Wash Only |
| Recommended Uses For Product | Cooking, meal prepping, picnicking |
| Reusability | Reusable |
| Size | 4" |
| Special Feature | Ceramic Blades |
| Special Features | Ceramic Blades |
| Style | Modern |
| Theme | Kitchen/Utility |
| UPC | 022677286099 |
| Unit Count | 1 Count |
| Warranty Description | Manufacturer Warranty |

## Product Details

- **Age Range (Description):** Adult
- **Blade Material:** Ceramic
- **Brand:** Rapala
- **Color:** Black
- **Handle Material:** Plastic
- **Included Components:** Ceramic Utility Knife Black
- **Model Name:** NK28609
- **Recommended Uses For Product:** Cooking, meal prepping, picnicking
- **Special Feature:** Ceramic Blades
- **Style:** Modern

## Images

![4 Inch Ceramic Utility Knife with Protective Sheath | Corrosion-Resistant Ceramic Blade, Bait Preparation Knife, Razor Sharp Cutting Edge, Ergonomic Non-Slip Handle - Image 1](https://m.media-amazon.com/images/I/61eoQWaa-LL.jpg)

## Questions & Answers

**Q: Is there any metal in the handle or sheath, basically anywhere on it? Thanks.**
A: It’s a great fishing knife  because there is no metal to rust

**Q: Why does it not have a belt clip??**
A: Because they didn’t make it with one

## Customer Reviews

### ⭐⭐⭐⭐⭐ The Never-Rust Razor: Rapala 4" Ceramic Utility Knife
*by T***R on October 1, 2025*

TLDR: Extremely sharp, corrosion-proof ceramic utility knife. Retains its edge exceptionally well, requires no sharpening, and is lightweight with a comfortable soft-grip handle. Excellent for fishing/bait prep, but ceramic blades are brittle and must be handled with care. I bought the Rapala Ceramic Utility Knife Black, 4" (RCUKB4) because I was tired of constantly dealing with rust and dull blades on my steel fishing and bait knives. The promise of a blade that is "2X sharper and 15X edge retainment" compared to steel, coupled with its completely corrosion-proof ceramic material, was exactly what I needed for a saltwater fishing environment. My initial thought was that this knife felt incredibly light—almost toy-like—but the molded soft-grip handle felt secure and comfortable in my hand, establishing confidence for use even when wet. My experience with the RCUKB4 has been fantastic, specifically for its intended purpose: cutting bait and light utility tasks around the boat. The blade is razor sharp and makes effortless, clean cuts through squid, fishing line, and softer materials. The corrosion resistance is genuine; after being exposed to saltwater and rinsed, there is absolutely no sign of rust or degradation, unlike my previous steel knives. The compression sheath is a small but crucial feature, holding the knife securely and safely for transport. The biggest mental hurdle is remembering that the ceramic blade, while incredibly hard and sharp, is also brittle. I avoid any twisting, prying, or chopping motions that could easily chip or snap the ceramic. This is a precision cutting tool, not a demolition tool. Pros Exceptional Sharpness: It is significantly sharper than standard steel utility knives right out of the box. Superior Edge Retention: The ceramic blade holds its edge for an incredibly long time, eliminating the need for frequent sharpening. 100% Corrosion Proof: Will never rust, making it perfect for marine and humid outdoor environments. Comfortable Handle: Molded soft-grip handle provides excellent non-slip control, even when wet. Secure Sheath: The compression sheath holds the knife tightly for safe storage and transport. Lightweight: Easy to carry in a tackle box or on a vest. Cons Brittle Blade: Ceramic is prone to chipping or breaking if dropped or used for prying or twisting motions. No Sharpening: While a pro, it's also a con—if you do manage to dull or damage the edge, sharpening ceramic requires specialized tools. Utility Limitation: Not suitable for heavy-duty tasks where force or bending is required. Verdict The Rapala 4" Ceramic Utility Knife delivers exactly what it promises: an unbelievably sharp, completely rust-free cutting tool that maintains its edge season after season. It's a game-changer for anyone dealing with bait, fishing line, or general utility cutting where corrosion is a problem. You must respect its ceramic nature and treat it as a precision cutting instrument, but if you do, it will reward you with superior performance. It is worth the price for its unparalleled sharpness and rust-proof properties. This knife is best for fishermen, boaters, and anyone needing a reliable, sharp, and lightweight utility knife in a wet environment. It earns a 5 star rating for excelling at its intended purpose.

### ⭐⭐⭐⭐⭐ Great NPE defensive device
*by G***3 on January 28, 2026*

Excellent NPE defensive device..... non magnetic at any level, great sheath retention even upside down for many hours, very light weight, sheath is non metallic, very sharp, carried through many detectors both standing and wanded at private events----DO NOT CARRY IN A TRAVEL OR LEGAL ENVIRONMENT

### ⭐⭐⭐⭐⭐ Super sharp for cutting Dyneema
*by P***O on March 10, 2025*

Great ceramic knife with sheath. if you're like me, and do a fair amount of splicing with dyneema, you need a knife like this as the sharpest of regular knives go dull quickly. These ceramic knives just don't wear out. They are brittle, so care is needed to not break the blade off the handle, but I save the broken blades as they will be handy.

## Frequently Bought Together

- Rapala Ceramic Utility Knife Black, 4" (RCUKB4)
- Rapala Ceramic Utility Knife White, NK28607-BRK , 4"
- Ceramic Blade Pocket Knife Two-Pack | Non-Reflective Black Finish | TPU Handle | Ringed Pommel | Manual Opening Mechanism | 3 1/10" Blade | 7 2/5" Overall Length

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-30*