---
product_id: 39319351
title: "Cubitron II File Belt, 33439, 60+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal"
brand: "3m"
price: "$64.33"
currency: USD
in_stock: true
url: https://www.desertcart.us/products/39319351-cubitron-ii-file-belt-33439-60-grit-3-8-in
store_origin: US
region: United States of America
---

# 2x longer abrasive life Precision-shaped ceramic grains 30% faster cut speed Cubitron II File Belt, 33439, 60+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal

**Brand:** 3m
**Price:** $64.33
**Availability:** ✅ In Stock

## Summary

> ⚡ Cut faster, last longer — the ultimate abrasive edge for pros.

## Quick Answers

- **What is this?** Cubitron II File Belt, 33439, 60+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal by 3m
- **How much does it cost?** $64.33 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/39319351-cubitron-ii-file-belt-33439-60-grit-3-8-in)

## Best For

- 3m enthusiasts

## Why This Product

- Trusted 3m brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Double the Durability:** Work longer without belt changes thanks to twice the lifespan of conventional abrasives.
- • **Cut Through Metal Like a Pro:** Experience 30% faster cutting with advanced Cubitron II technology that slices, not plows.
- • **Precision-Shaped Grain Power:** Uniform, electrostatically oriented ceramic grains ensure consistent, efficient abrasion every time.
- • **Versatile Industrial Strength:** Perfect for spot weld removal, rivet grinding, deburring, and finishing in tight spaces.
- • **Reliable Heavy-Duty Performance:** Engineered to stay strong and consistent under demanding workshop conditions.

## Overview

The 3M Cubitron II File Belt 33439 is a premium resin-bonded abrasive belt featuring 60+ grit precision-shaped ceramic grains. Designed for industrial use, it delivers 30% faster cutting and twice the lifespan of traditional belts, making it ideal for spot weld removal, rivet grinding, and detailed metal finishing in confined spaces. Compatible with most file belt sanders, it maximizes productivity with reliable, heavy-duty performance.

## Description

Use 3M Cubitron II File Belt 786F as high durability and long-lasting performance premium abrasive belt. It is ideal for tough detail work like cleaning, deburring, blending and finishing as well as working in small confined spaces. The 3M Cubitron II File Belt 786F is equipped with 3M Cubitron II Abrasives, which feature our Precision-Shaped Grain (PSG) technology with uniformly sized ceramic grains and precisely shaped triangular structures - essentially, sharp peaks that slice, not plow, through paint and metal. These grains are electrostatically oriented on the abrasive surface for the most efficient cut and even wear. Additionally, they fracture during use to maintain sharp abrasive edges resulting in a 30% faster cut and lasting 2x longer life than conventional ceramic abrasives. 3M Cubitron II File Belt 786F is available in various coarse grades and various widths as well as various lengths; it can be fitted on to various types of file belt machines available on the market. It helps to maximize productivity and deliver an efficient process in the workshop.

## Features

- LONGER LASTING: Cubitron II delivers 30 percent faster cut and double the life of other premium abrasives
- UNIFORM ABRASIVE: 3M Cubitron II technology provides an efficient cut that easily cleans, strips, and deburrs
- FAST CUTTING: Versatile belt slices through hard metal for quick cut
- COMPATIBLE: Grinds out rivets and spot welds quickly when used with 3M File Belt Sander
- RELIABLE: Heavy-duty belt stays reliably strong for consistent performance
- For industrial/occupational use only. Not for consumer sale or use.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Alloy Steel, Metal, Resin |
| Grit Material | Ceramic |
| Item dimensions L x W x H | 1.38 x 2.63 x 5.5 inches |
| Brand | 3M |
| Grit Type | 60+ Grit |
| Item Weight | 0.15 Pounds |
| Grit Number | 60 |
| UPC | 051131334397 |
| Number of Items | 10 |
| Global Trade Identification Number | 00051131334397, 50051131334392 |
| Manufacturer | 3M |
| Model | 33439 |
| Item Weight | 2.4 ounces |
| Product Dimensions | 1.38 x 2.63 x 5.5 inches |
| Item model number | 33439 |
| Is Discontinued By Manufacturer | No |
| Manufacturer Part Number | 33439 |
| OEM Part Number | 33439 |
| Construction | Bonded |

## Product Details

- **Material:** Alloy Steel, Metal, Resin
- **Grit Material:** Ceramic
- **Item dimensions L x W x H:** 1.38 x 2.63 x 5.5 inches
- **Brand:** 3M
- **Grit Type:** 60+ Grit

## Images

![Cubitron II File Belt, 33439, 60+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal - Image 1](https://m.media-amazon.com/images/I/51BCywVN64L.jpg)

## Frequently Bought Together

- 3M Cubitron II File Belt, 33439, 60+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal
- 3M Cubitron II File Belt, 33437, 36+ Grit, 3/8 in x 13 in, Pack of 10 File Belts, Resin Bonded, Spot Weld Removal
- 3M Cubitron II File Belt, 33446, 80+ Grit, 1/2 in x 18 in, File Belts, Resin Bonded, Spot Weld Removal, Pack of 10

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-05*