---
product_id: 39924617
title: "4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-CSL)"
brand: "pilot"
price: "¥2567"
currency: JPY
in_stock: true
reviews_count: 8
category: "Pilot"
url: https://www.desertcart.jp/products/39924617-4-colors-ballpoint-pen-acroball-4-extra-fine-black-red
store_origin: JP
region: Japan
---

# 0.5mm extra fine precision 4 vibrant ink colors durable 100,000-click soft clip 4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-CSL)

**Brand:** pilot
**Price:** ¥2567
**Availability:** ✅ In Stock

## Summary

> 🖋️ Write your success story in four bold colors!

## Quick Answers

- **What is this?** 4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-CSL) by pilot
- **How much does it cost?** ¥2567 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/39924617-4-colors-ballpoint-pen-acroball-4-extra-fine-black-red)

## Best For

- pilot enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Soft clip mechanism endures 100,000 clips without breaking—reliability you can trust
- • **Smooth, Skip-Free Writing:** Acro ink with 1/5 viscosity reduces friction for effortless flow
- • **Vibrant Quad-Color Palette:** Black, Red, Blue & Green inks for dynamic note-taking and color coding
- • **Ergonomic Tire-Pattern Grip:** Non-slip rubber grip designed for all-day comfort and control
- • **Water-Resistant & Quick-Dry:** Pigmented ink resists smudging and dries instantly, perfect for fast-paced professionals

## Overview

The Pilot 4 Colors Ballpoint Pen (Acroball 4 Extra Fine) combines precision 0.5mm tips with smooth, water-resistant Acro ink in black, red, blue, and green. Featuring a durable soft clip rated for 100,000 uses and a unique tire-pattern rubber grip, this pen delivers a premium, skip-free writing experience tailored for professionals who demand reliability and style in every stroke.

## Description

This pen is a four-color Black, Red, Blue and Green ballpoint pen that uses the Acro ink developed by the Pilot. The oil-based ink has 1/5 of the viscosity of conventional oil-based inks. The unique blend of ink and lubricants allows the ball at the tip of the pen to rotate smoothly by reducing friction. This creates an enjoyable, non-skip writing experience. The ink is satisfyingly pigmented and is also water-resistant. The pen has a unique rubber grip developed by Pilot that sports a tire pattern, which prevents your hand From slipping. The clip on the pen uses a coil spring with a "soft clip" Mechanism that can be clipped 100, 000 times without breaking, according to Pilot testing. Not only is it durable, The clip is extremely easy to open and use.

Review: Nursing pen - The best healthcare pen! Very fine ball, smooth ink, and it’s my must-have as a nurse. I love it so much I give it as a gift to new nurses!
Review: Cute pen - This is a cute pen that has four different colors. It has red, blue, green and purple. It is fine point and writes smoothly. Ink does not smear and dries instantly. Order came in on time.

## Features

- 4 colors Ballpoint pen: black, red, blue, green
- Acro ink adopted
- Ballpoint size: 0.5mm

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00L7MTYU2 |
| Additional Features | Ballpoint |
| Age Range (Description) | Kid, Teen, Adult |
| Age Range Description | Kid, Teen, Adult |
| Best Sellers Rank | #23,711 in Office Products ( See Top 100 in Office Products ) #695 in Ballpoint Pens |
| Body Shape | Round |
| Brand | PILOT |
| Brand Name | PILOT |
| Closure Type | Twist |
| Color | Soft Blue |
| Customer Reviews | 4.7 out of 5 stars 1,367 Reviews |
| Drill Point | Extra Fine |
| Global Trade Identification Number | 04902505482380 |
| Grip Type | non-skip |
| Hand Orientation | Ambidextrous |
| Ink Base | Oil |
| Ink Color | Black, Red, Blue & Green |
| Item Dimensions | 0.54 x 5.67 x 0.54 inches |
| Item Weight | 0.02 Pounds |
| Line Size | 0.5mm |
| Manufacturer | Pilot |
| Material | Plastic |
| Material Type | Plastic |
| Model Number | BKAB-45EF-CSL |
| Recommended Uses For Product | Writing |
| Style | Refillable |
| Unit Count | 1.0 Count |
| Writing Instrument Form | Ballpoint Pen |

## Product Details

- **Age Range (Description):** Kid, Teen, Adult
- **Brand:** PILOT
- **Color:** Soft Blue
- **Ink Color:** Black, Red, Blue & Green
- **Writing Instrument Form:** Ballpoint Pen

## Images

![4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-CSL) - Image 1](https://m.media-amazon.com/images/I/614BqoZUxBL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: has anyone had trouble with the base of the pen not staying tight?? always wants to fall off...loved the pen otherwise but am hesitant to re- purchase**
A: Love the pen. No problems, just been using it too much, ran out of ink for black and blue. Anybody know what exactly is the refill needed?

**Q: Can you order refill inks?**
A: I was able to get blue and black.

**Q: Is this .38 or .5??**
A: .38. Loved it. But now it’s starting to make blobs.

**Q: Where can I find the correct ink refills for all 4 colors?**
A: Bvrf-8ef

## Customer Reviews

### ⭐⭐⭐⭐⭐ Nursing pen
*by L***E on July 13, 2025*

The best healthcare pen! Very fine ball, smooth ink, and it’s my must-have as a nurse. I love it so much I give it as a gift to new nurses!

### ⭐⭐⭐⭐⭐ Cute pen
*by A***R on February 2, 2026*

This is a cute pen that has four different colors. It has red, blue, green and purple. It is fine point and writes smoothly. Ink does not smear and dries instantly. Order came in on time.

### ⭐⭐⭐⭐⭐ Smooth!!!
*by B***M on January 7, 2025*

Even if this pen is fine it's super smooth it's didn't think I was going to like it but I do!!! No smearing, smooth transition between clicking down the other colors. Well made!!! I'll be either getting refills or another pen when this one is not working anymore. Super light not heavy at all! Super easy to use!! Not too expensive either!

## Frequently Bought Together

- Pilot 4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-CSL)
- Pilot 4 Colors Ballpoint Pen, Acroball 4 Extra Fine, Black, Red, Blue & Green (Bkab-45EF-Ncc)
- COLNK Multicolor Ballpoint Pen 0.5, 4-in-1 Colored Pens Fine Point,Ballpoint Gift Pens for Planner Journaling,Assorted Ink, 6-Count

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**Shop now:** [https://www.desertcart.jp/products/39924617-4-colors-ballpoint-pen-acroball-4-extra-fine-black-red](https://www.desertcart.jp/products/39924617-4-colors-ballpoint-pen-acroball-4-extra-fine-black-red)

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-03-08*