3M 7100224420 Flexible Diamond Qrs Cloth Disc 5x1 in M300

Product Description

The 3M 7100224420 is a flexible diamond abrasive cloth disc engineered for heavy-duty grinding and finishing on hard-to-grind materials. Built on a hook-and-loop QRS backing, the disc uses a metal-plated bond to securely anchor micron-graded diamond abrasive particles, delivering consistent cut rates alongside an improved surface finish. At 5 inches in diameter and 1 inch in width, the M300 grit designation makes it well suited for controlled material removal where precision and durability are both required. Fabricators, tool-and-die technicians, and specialty tradespeople working with demanding substrates rely on this disc for its resistance to premature wear.

This disc is designed for use on hard-to-grind materials including stone, glass, ceramic, metal, carbide, and composites. The flexible cloth construction allows it to conform to contoured or irregular surfaces, making it practical for both flat stock and curved workpieces. The QRS hook-and-loop attachment system enables fast disc changes on compatible random orbital and disc sanders, reducing downtime during high-volume finishing operations in shop or field environments.

Key Features

• Metal-plated bond anchors micron-graded diamonds for secure, long-lasting abrasive retention
• Flexible cloth backing conforms to contoured and irregular surfaces
• QRS hook-and-loop attachment for tool-free, rapid disc changes
• Improved durability for demanding, high-wear applications
• Better surface finish without sacrificing cut rates
• Compatible with hard-to-grind materials: stone, glass, ceramic, metal, carbide, and composites

Compatibility

Designed for use with QRS hook-and-loop compatible disc sanders and random orbital tools. Suitable for grinding and finishing applications on stone, glass, ceramic, metal, carbide, and composite materials.

Installation Notes

Ensure the tool spindle and backing pad are fully stopped before attaching or removing the disc. Align the QRS hook-and-loop backing squarely onto a compatible backing pad and press firmly to seat. Inspect the disc for damage before each use and replace if the abrasive layer shows uneven wear or delamination. Follow applicable shop safety protocols including eye protection and dust control when grinding ceramic, glass, or composite materials.

Technical Specifications

• Diameter: 5 inches
• Width: 1 inch
• Grit Grade: M300
• Abrasive Type: Diamond
• Bond Type: Metal-plated
• Backing Type: Flexible cloth with QRS hook-and-loop
• Unit of Measure: Each
• Minimum Order Quantity: 2
• UPC: 00051115197598

Standard Information

• Brand: 3M
• Manufacturer Part Number: 7100224420