---
product_id: 49452056
title: "Hardener (PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins."
brand: "hardener"
price: "€ 27.70"
currency: EUR
in_stock: true
reviews_count: 8
category: "Hardener"
url: https://www.desertcart.fi/products/49452056-hardener-pack-of-2-40g-tube-red-for-2k-body
store_origin: FI
region: Finland
---

# Fast curing power Fibreglass & resin compatible High viscosity for precision Hardener (PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins.

**Brand:** hardener
**Price:** € 27.70
**Availability:** ✅ In Stock

## Summary

> 🛠️ Cure fast, fix smart, stay ahead.

## Quick Answers

- **What is this?** Hardener (PACK OF 2) 40g Tube Red for 2K Body fillers, Fibreglass repair fillers, Resins. by hardener
- **How much does it cost?** € 27.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/49452056-hardener-pack-of-2-40g-tube-red-for-2k-body)

## 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

- • **Dual-Pack Value:** Two 40g tubes mean you’re always stocked and ready for any emergency or planned repair.
- • **Fibreglass & Resin Ready:** Engineered for seamless compatibility with polyester fillers, fibreglass repairs, and resins—versatility that professionals trust.
- • **Rapid Cure, Zero Downtime:** Accelerate your repair projects with a hardener that sets fast, so you get back on the road quicker.
- • **Precision Viscosity Control:** High viscosity formula ensures smooth, mess-free application every time—no drips, no waste.
- • **Trusted by Pros, Loved by DIYers:** With a 4.6-star rating and top 25 rank in automotive fillers, join thousands who rely on this hardener for flawless finishes.

## Overview

This pack of two 40g red hardener tubes contains dibenzoyl peroxide paste designed for rapid curing of 2K body fillers, fibreglass repair fillers, and polyester resins. Its high viscosity ensures precise application, making it ideal for professional and DIY automotive body repairs. Highly rated and trusted, it delivers reliable, fast-setting performance to keep your projects on schedule.

## 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: Quality hardener - Cheapest way to buy with the small amount supplied in filler. Good product
Review: Does the job - Does the job, good price, fast delivery.

## 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 | 1,796 in Automotive ( See Top 100 in Automotive ) 25 in Fillers, Adhesives & Sealants |
| Brand | Hardener |
| Customer Reviews | 4.6 4.6 out of 5 stars (627) |
| 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

![Hardener (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

### ⭐⭐⭐⭐⭐ Quality hardener
*by J***S on 20 November 2025*

Cheapest way to buy with the small amount supplied in filler. Good product

### ⭐⭐⭐⭐⭐ Does the job
*by M***K on 27 July 2025*

Does the job, good price, fast delivery.

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

Recommended

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**Shop now:** [https://www.desertcart.fi/products/49452056-hardener-pack-of-2-40g-tube-red-for-2k-body](https://www.desertcart.fi/products/49452056-hardener-pack-of-2-40g-tube-red-for-2k-body)

---

*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-15*