---
product_id: 48248450
title: "Mastic Gun - 425ml Capacity - Metal Frame Skeleton Caulking Gun, 7:1 Thrust Ratio, Ladder Hook & Cleaning Pin, Accepts C20 & C30 Cartridges for Sealants & Adhesives"
brand: "faithfull"
price: "$32.59"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/48248450-mastic-gun-425ml-capacity-metal-frame-skeleton-caulking-gun-7
store_origin: US
region: United States of America
---

# Fits C20 & C30 adhesive tubes Ergonomic rounded trigger 425ml max cartridge capacity Mastic Gun - 425ml Capacity - Metal Frame Skeleton Caulking Gun, 7:1 Thrust Ratio, Ladder Hook & Cleaning Pin, Accepts C20 & C30 Cartridges for Sealants & Adhesives

**Brand:** faithfull
**Price:** $32.59
**Availability:** ✅ In Stock

## Summary

> 🛠️ Elevate your sealant game with comfort and precision!

## Quick Answers

- **What is this?** Mastic Gun - 425ml Capacity - Metal Frame Skeleton Caulking Gun, 7:1 Thrust Ratio, Ladder Hook & Cleaning Pin, Accepts C20 & C30 Cartridges for Sealants & Adhesives by faithfull
- **How much does it cost?** $32.59 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/48248450-mastic-gun-425ml-capacity-metal-frame-skeleton-caulking-gun-7)

## Best For

- faithfull enthusiasts

## Why This Product

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

## Key Features

- • **Robust Metal Frame:** Durable construction built to withstand daily professional and DIY demands.
- • **Comfort-Driven Design:** Rounded trigger reduces hand fatigue, empowering you to work longer with ease.
- • **Optimal Cartridge Size:** Supports up to 425ml cartridges, maximizing your project efficiency.
- • **Built-In Nozzle Cleaner:** Integrated cleaning pin on handle keeps your workflow smooth and mess-free.
- • **Universal Tube Compatibility:** Seamlessly handles both C20 and C30 adhesive & sealant tubes for ultimate versatility.

## Overview

The Faithfull Mastic Gun 425MM is a durable metal frame caulking tool designed for both professional tradespeople and home users. It accepts C20 and C30 adhesive and sealant tubes up to 425ml, features an ergonomic rounded trigger to reduce hand fatigue, and includes a handy nozzle cleaning pin integrated into the handle for easy maintenance.

## Description

Faithfull Mastic Gun - 425ml Capacity - Metal Frame Skeleton Caulking Gun, 7:1 Thrust Ratio, Ladder Hook & Cleaning Pin, Accepts C20 & C30 Cartridges for Sealants & Adhesives

## Features

- Will accept C20 and C30 sized adhesive & sealant tubes
- Rounded trigger for comfort
- A handy nozzle cleaning pin is provided on the handle.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Faithfull |
| Model Number | FAIMG |
| Colour | Multi-coloured |
| Product Dimensions | 49.6 x 22.2 x 13.2 cm; 450 g |
| Item Weight | 450 g |

## Images

![Mastic Gun - 425ml Capacity - Metal Frame Skeleton Caulking Gun, 7:1 Thrust Ratio, Ladder Hook & Cleaning Pin, Accepts C20 & C30 Cartridges for Sealants & Adhesives - Image 1](https://m.media-amazon.com/images/I/616YcQoorZL.jpg)

## Available Options

This product comes in different **Style Name, Package Quantity** options.

## Questions & Answers

**Q: how many mls in c20 and c30 tubes?? thank you anyone...**
A: c2 (not c20) are 310ml and the standard, will fit any gun and are the most sold size,  be careful if you buy a c3 with 380 or 400ml it might not fit unless you bought the larger gun to begin with

**Q: Hi, i wanted to know if this product (310ml) will fit: https://www.amazon.co.uk/dp/b004lo5cg8/ref=wl_it_dp_o_pc_ns_ttl. can you please confirm?**
A: asked by Miss F Ruggiero on 17 Jan. 2017...><...Hi, i wanted to know if this product (310ml) will fit:.....><...couldn't find your product listed...><...This Faithfull Mastic Gun 425MM will fit any standard size tube on the market....><... Hope this helps...>

**Q: Is this metal outside shell**
A: Hi 
Metal skeleton mastic gun! All metal no plastic

**Q: Is this for large silicone tubes ?**
A: Its for standard size. The usual size they come in

## Frequently Bought Together

- Faithfull FAIMG Mastic Gun 425MM
- UniBond Anti-Mould White, Waterproof Mould Protection Kitchen & Bathroom Sealant, Long-lasting White Silicone Sealant, Powerful Shower Sealant, 1 x 274g Cartridge
- Unibond Sealant Finishing Tool, Effective Sealant Tool for a Smooth & Professional Finish, Sealant Smoother for All Sealants, Silicone Sealant Tool for Wall & Floor Applications

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.us/products/48248450-mastic-gun-425ml-capacity-metal-frame-skeleton-caulking-gun-7](https://www.desertcart.us/products/48248450-mastic-gun-425ml-capacity-metal-frame-skeleton-caulking-gun-7)

---

*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-05-19*