---
product_id: 332370313
title: "Bon Tool Anti-Crack Concrete Fibers"
brand: "bon"
price: "¥8317"
currency: JPY
in_stock: true
reviews_count: 5
category: "Bon"
url: https://www.desertcart.jp/products/332370313-bon-tool-anti-crack-concrete-fibers
store_origin: JP
region: Japan
---

# 80% crack reduction in concrete 1 lb degradable eco-friendly packaging Alkali-resistant glass fibers Bon Tool Anti-Crack Concrete Fibers

**Brand:** bon
**Price:** ¥8317
**Availability:** ✅ In Stock

## Summary

> 💥 Reinforce your concrete, reduce your worries — build like a pro!

## Quick Answers

- **What is this?** Bon Tool Anti-Crack Concrete Fibers by bon
- **How much does it cost?** ¥8317 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/332370313-bon-tool-anti-crack-concrete-fibers)

## Best For

- bon enthusiasts

## Why This Product

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

## Key Features

- • **Trusted by Pros:** Bon Tool leads the industry with premium fibers favored by top construction experts
- • **Unmatched Durability:** Over twice the tensile strength of nylon for superior concrete reinforcement
- • **Crack Prevention Power:** Prevents up to 80% of concrete cracks, ensuring long-lasting structural integrity
- • **Freeze/Thaw Resilience:** Enhances concrete’s durability against harsh weather cycles for year-round reliability
- • **Eco-Conscious Packaging:** Sold in degradable bags to align with sustainable construction practices

## Overview

Bon Tool Anti-Crack Concrete Fibers are alkali-resistant fiberglass strands designed to significantly reduce plastic shrinkage and improve freeze/thaw durability in concrete. Packaged in eco-friendly degradable bags, this 1-pound product offers over twice the tensile strength of nylon fibers and can prevent up to 80% of concrete cracks, making it a top choice for professional-grade construction projects.

## Description

Reduces plastic shrinkage and improves freeze/thaw durability. Over twice the tensil strength of nylon-high dispersion. Optimum quality for concrete to prevent up to 80 percent of concrete cracks.

Review: Glass fibers. I'm using these to reinforce plaster of paris and it's working very well. It takes very little. I used 10% by weight the first time and I couldn't even mix the stuff completely because I couldn't penetrate the solid "woven" mat of fibers that formed as I mixed it. My only complaint is that they come in little bunches of fibers, about 1/8" wide. I prefer individual strands; so I break up the groups before use.
Review: I had no problem with clumping like mentioned by people who probably didn’t mix this product properly. My slab came out amazing I see no fibres sticking through and I used double the recommended weight. Highly recommend this product for any slab pours/caping.

## Features

- Alkalai resistant glass fibers
- Package size is one Pound
- Sold in degredable bags
- Leader in professional contruction tools

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000CODWAE |
| ASIN  | B000CODWAE |
| Brand Name | Bon |
| Color | As Shown in the Image |
| Customer Reviews | 4.6 4.6 out of 5 stars (615) |
| Customer reviews | 4.6 4.6 out of 5 stars (615) |
| Date First Available  | 1 January 2024 |
| Global Trade Identification Number | 00743153325001 |
| Included Components | CONCRETE FIBERS - 3/4" ANTI-CRAK - 1 LB |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 26.7 x 17.1 x 2.5 centimeters |
| Item Form | Solid |
| Item Shape | Rectangular |
| Item Type Name | CONCRETE FIBERS - 3/4" ANTI-CRAK - 1 LB |
| Item Weight | 499 g |
| Item model number  | 32-500 |
| Manufacturer | Bon Tool |
| Manufacturer  | Bon Tool |
| Material | Fiberglass Blend |
| Model Number | 32-500 |
| Number of Items | 1 |
| Part Number | 32-500 |
| Product Dimensions  | 26.67 x 17.15 x 2.54 cm; 498.95 g |
| UPC | 733353456254 732454600665 743153325001 |
| Unit Count | 1 Count |

## Product Details

- **Brand:** Bon
- **Colour:** As Shown in the Image
- **Item dimensions L x W x H:** 26.7 x 17.1 x 2.5 centimeters
- **Material:** Fiberglass Blend
- **Shape:** Rectangular

## Images

![Bon Tool Anti-Crack Concrete Fibers - Image 1](https://m.media-amazon.com/images/I/81qJB+2FotL.jpg)
![Bon Tool Anti-Crack Concrete Fibers - Image 2](https://m.media-amazon.com/images/I/31gfzXRG9pL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: How do you get it to disperse evenly throughout the mix?**
A: What are you mixing it in? I mixed a handful in an 80 pound bag of cement with an hand-held cement mixture.

**Q: Does this work with plaster?**
A: We see no reason that they would not work with plaster.  Be sure to use these fiberglass fibers as nylon fibers might float to the surface and give you a 'hairy' finish.

**Q: Is it ok to mix these fibers in the concrete and use rebar**
A: I am not a concrete expert but I added it to a hearth I was making and used chicken wire too. Make sure the fibers are not on the surface.  They will look unsightly.  I can't see why you couldn't use both.

**Q: Why does this product take two months for delivery and the other one u have listed takes a few days?**
A: Ask Amazon.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by S***E on 14 July 2017*

Glass fibers. I'm using these to reinforce plaster of paris and it's working very well. It takes very little. I used 10% by weight the first time and I couldn't even mix the stuff completely because I couldn't penetrate the solid "woven" mat of fibers that formed as I mixed it. My only complaint is that they come in little bunches of fibers, about 1/8" wide. I prefer individual strands; so I break up the groups before use.

### ⭐⭐⭐⭐⭐ Review
*by I***0 on 20 December 2023*

I had no problem with clumping like mentioned by people who probably didn’t mix this product properly. My slab came out amazing I see no fibres sticking through and I used double the recommended weight. Highly recommend this product for any slab pours/caping.

### ⭐⭐⭐⭐⭐ Review
*by K***S on 1 April 2021*

I make small cement items such as alligators and stones. The stone molds that I use simulate natural stone and parts of the mold are thin. I am concerned with the possibility of the stone edges breaking off. I don't worry anymore when using these fibers. I have had great results and stress tests on the stones have proven the usefulness of this additive. Keep in mind...a little goes a long way. Use sparingly for best results.

## Frequently Bought Together

- Bon Tool Anti-Crack Concrete Fibers
- Alpha Pro Fluidizer 1 lb - Dry superplasticizer for Any Concrete Countertop Mix
- SIKA - SikaLatex R - Concrete Adhesive Glue, White - Admix for Portland-Cement Mortar/Concrete - Resistant to Freezing and thawing Damage - 1-Gallon

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-08-09*