---
product_id: 49452056
title: "(PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins."
brand: "hardener"
price: "$18.07"
currency: USD
in_stock: true
reviews_count: 8
category: "Hardener"
url: https://www.desertcart.us/products/49452056-pack-of-2-40g-tube-red-for-2k-body-fillers
store_origin: US
region: United States of America
---

# Fibreglass compatible for versatile repairs Pack of 2 x 40g tubes for extended use High viscosity for smooth application (PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins.

**Brand:** hardener
**Price:** $18.07
**Availability:** ✅ In Stock

## Summary

> 🔧 Fix it right, fix it fast — the pro’s choice for flawless bodywork!

## Quick Answers

- **What is this?** (PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins. by hardener
- **How much does it cost?** $18.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/49452056-pack-of-2-40g-tube-red-for-2k-body-fillers)

## Best For

- hardener enthusiasts

## Why This Product

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

## Key Features

- • **Fibreglass Friendly:** Perfectly formulated for polyester fillers and fibreglass repairs
- • **Pro-Level Viscosity:** High viscosity means less mess, more control, and a flawless finish
- • **Dual-Pack Convenience:** Two 40g tubes to keep your projects moving without interruption
- • **Trusted Quality & Value:** Top-rated with 4.6 stars from 635 pros who demand the best
- • **Precision Hardening Power:** Dibenzoyl Peroxide paste ensures fast, reliable curing every time

## Overview

This pack of two 40g red hardener tubes features Dibenzoyl Peroxide paste designed for use with 2K polyester body fillers, fibreglass repair fillers, and resins. Its high viscosity ensures smooth, controlled application, making it ideal for automotive body repairs. Trusted by professionals with a 4.6-star rating, it delivers reliable, fast curing and is compatible with fibreglass materials for versatile use.

## Description

Pack Of 2 40G Tube Red Hardener For 2K Body Fillers, Fibreglass Repair Fillers, Resins. Hardener Dibenzoyl Peroxide Paste. For Use With Polyester Body Fillers, Easy Sand, Fibreglass Repair Filler And Resins.

Review: Exalent - Exalent value and great quality Thank you
Review: Good quality - Good quality easy to use.

## Features

- Causes serious eye irritation.
- Heating may cause a fire.
- May cause an allergic skin reaction.
- Very toxic to aquatic life.
- Hardening paste with dibenzoyl peroxide.
- For use with polyester structure sealant, fiberglass repairs and resins.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01FZ4D6IS |
| Batteries | 2 C batteries required. |
| Best Sellers Rank | 2,612 in Automotive ( See Top 100 in Automotive ) 43 in Fillers, Adhesives & Sealants |
| Brand | Hardener |
| Customer Reviews | 4.6 4.6 out of 5 stars (635) |
| Date First Available | 21 May 2016 |
| Delivery information | We cannot deliver certain products outside mainland UK ( Details ). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Item Weight | 100 g |
| Item model number | 5010372702407 |
| Manufacturer | Tetrosyl |
| Manufacturer part number | EXH001 |
| Package Dimensions | 12 x 6.2 x 2.5 cm; 100 g |
| Special Features | Fibreglass Compatible |
| Viscosity | High Viscosity |

## Product Details

- **Brand:** Hardener
- **Item form:** Paste
- **Material:** Dibenzoyl Peroxide
- **Special feature:** Fibreglass Compatible
- **Specific uses for product:** Fibreglass

## Images

![(PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins. - Image 1](https://m.media-amazon.com/images/I/71upgFFAH6L.jpg)

## Questions & Answers

**Q: using it to fill hairline cracks in fibreglass shower tray - can it be sanded, overpainted, and is it waterproof?**
A: This is just a hardener. It is an additive for curing resin.  It is not a resin itself.  Thank you

**Q: does this work with big boy fibreglass**
A: Hi Colin
If you was originally supplied with red hardener with your product then this will do the job.
Red hardener is used for a majority of fillers and fibreglass fillers.
If need need any further information please do not hesitate to contact the Qpaints Team

**Q: Does this product garden resin jewellery and will it discolour the jewellery?**
A: don't think so but depends on the resin you are using too. Alsodo a test run first.

**Q: Is this harder red or white in colour?**
A: From memory its red but I used very little in the resin, so it did not really colour it. it did the job, but I did a test first to check that a small amount would harden the old resin I had.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Exalent
*by B***N on 12 May 2026*

Exalent value and great quality Thank you

### ⭐⭐⭐⭐⭐ Good quality
*by S***M on 7 May 2026*

Good quality easy to use.

### ⭐⭐⭐⭐ Recommended
*by S***E on 26 January 2026*

Recommended

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-09*