---
product_id: 449386416
title: "Silverhook Big Boy - Relleno de Metal, 250 ml BIG21"
brand: "silverhook"
price: "$74.09"
currency: USD
in_stock: true
reviews_count: 5
category: "Silverhook"
url: https://www.desertcart.us/products/449386416-silverhook-big-boy-relleno-de-metal-250-ml-big21
store_origin: US
region: United States of America
---

# Aluminium particles for superior thermal conductivity Ultra tough & easy sanding for flawless finishes Corrosion resistant for durable exterior use Silverhook Big Boy - Relleno de Metal, 250 ml BIG21

**Brand:** silverhook
**Price:** $74.09
**Availability:** ✅ In Stock

## Summary

> 🛠️ Fix it like a pro, last like a legend.

## Quick Answers

- **What is this?** Silverhook Big Boy - Relleno de Metal, 250 ml BIG21 by silverhook
- **How much does it cost?** $74.09 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/449386416-silverhook-big-boy-relleno-de-metal-250-ml-big21)

## Best For

- silverhook enthusiasts

## Why This Product

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

## Key Features

- • **Smooth Operator 🪒:** Effortless sanding delivers a professional-grade, paint-ready surface every time.
- • **Versatile Fixer 🔧:** Adheres seamlessly to steel, aluminium, zinc, concrete, brick, and wood for all your repair needs.
- • **Thermal Mastery ⚙️:** Aluminium-infused formula ensures rapid heat dissipation, perfect for high-temp repairs.
- • **Weather Warrior 🛡️:** Corrosion resistance guarantees long-lasting protection on exterior metal surfaces.
- • **Rock-Solid Durability 🛠️:** Ultra tough consistency withstands vibrations and stress without cracking.

## Overview

Silverhook Big Boy Metal Filler is a 250 ml two-component putty packed with aluminium particles for excellent thermal conductivity. Designed for automotive and general repairs, it offers ultra toughness, easy sanding, and corrosion resistance, making it ideal for surfaces exposed to vibrations and temperature changes. Trusted by DIYers and pros alike, it bonds to metal, concrete, brick, and wood, delivering a smooth, durable finish that stands the test of time.

## Description

Silverhook Ultra-tough Metal Filler offers easy application and excellent sanding properties. It is a two-component putty for application on surfaces that are subject to vibrations and frequent temperature changes. The metal filler Has excellent thermal conductivity due to aluminium particles within the product and its gripping ability to steel, aluminium and zinc. Metal filler can also be used as a general-purpose filler on concrete, brick, and wood. As the filler Is corrosion resistant It makes a perfect exterior filler on areas requiring a smooth paint finish.

Review: I used this for a small automotive repair, and it worked perfectly. It mixes easily, spreads smoothly, and has a great working time before it starts to set. Once dry, it sands down to a very fine finish. It's a high-quality product that makes DIY repairs look professional.
Review: Used Silverhook Big Boy Metal Filler on my VW campervan, and it handled the job like a champ. Thick, easy to apply, and once it sets, it’s rock hard, exactly what you need for proper, lasting repairs. Sands down smooth and takes paint like a dream. For big jobs on metal panels, this filler is my go-to. Reliable, tough, and does what it says.

## Features

- Contains Aluminium Particles
- Excellent Thermal Conductivity
- Ultra Tough, Easy Sanding
- Corrosion Resistant

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00KX64QNI |
| Best Sellers Rank | #237,909 in Automotive ( See Top 100 in Automotive ) #832 in Automotive Polishes |
| Blade Material | Metal |
| Brand Name | SILVERHOOK |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,218) |
| Global Trade Identification Number | 05036029110210 |
| Handle Material | Metal |
| Included Components | Applicator |
| Item Type Name | Metal Filler |
| Manufacturer | WEUANY |
| Manufacturer Part Number | BIG21 |
| Material Type | Metal |
| Model Number | BIG21 |
| Recommended Uses For Product | Automotive repairs, Construction, DIY repairs, Exterior surfaces |

## Product Details

- **Brand:** SILVERHOOK
- **Handle material:** Metal
- **Manufacturer:** WEUANY
- **Material:** Metal
- **Recommended uses for product:** Automotive repairs, Construction, DIY repairs, Exterior surfaces

## Images

![Silverhook Big Boy - Relleno de Metal, 250 ml BIG21 - Image 1](https://m.media-amazon.com/images/I/81UoL8VGyiL.jpg)
![Silverhook Big Boy - Relleno de Metal, 250 ml BIG21 - Image 2](https://m.media-amazon.com/images/I/81URimuS8XL.jpg)
![Silverhook Big Boy - Relleno de Metal, 250 ml BIG21 - Image 3](https://m.media-amazon.com/images/I/81Jj+wkztjL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by I***A on 22 March 2026*

I used this for a small automotive repair, and it worked perfectly. It mixes easily, spreads smoothly, and has a great working time before it starts to set. Once dry, it sands down to a very fine finish. It's a high-quality product that makes DIY repairs look professional.

### ⭐⭐⭐⭐⭐ Review
*by T***A on 16 May 2025*

Used Silverhook Big Boy Metal Filler on my VW campervan, and it handled the job like a champ. Thick, easy to apply, and once it sets, it’s rock hard, exactly what you need for proper, lasting repairs. Sands down smooth and takes paint like a dream. For big jobs on metal panels, this filler is my go-to. Reliable, tough, and does what it says.

### ⭐⭐⭐⭐ Review
*by R***M on 19 October 2025*

This is a great product, does exactly what it says on the tin, fills, sands to a smooth finish and easy to use and mix, except, the instructions suggest mixing half the of hardener, which comes in a small squeezing tube with half the filler in the tin, problem is there is no way to measure with any accuracy half of either. So having prepared the surfaces to be filled I duly measured out what I considered half and half in a separate container and started filling, I worked quickly, however within five minutes it had set hard making the still to be used filler unusable. Being more careful with the other half mixing smaller quantities I managed to finish the work. It would be great if the manufacturer could provide some better means of measuring out

## Frequently Bought Together

- Silverhook Big Boy Metal Filler, 250 ml BIG21
- SILVERHOOK Big Boy Aluminium Mesh 30 x 20 cm (12''x 8'')
- Silverhook BIG11 Body Filler , 250-Millilitre, gray

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-04-22*