4" Aluminum Oxide Resin Fiber Discs — Angle Grinder Grinding Discs

USA1 Abrasives 4" Aluminum Oxide Resin Fiber Discs are designed for use with 4" angle grinders for grinding, blending, and surface preparation on metal and wood. The heavy fiber backing provides the rigidity needed for aggressive stock removal, while aluminum oxide abrasive delivers reliable, consistent performance across a wide grit range. 5/8" arbor hole. Sold in packs of 25 discs.

Technical Specifications

• Abrasive Material: Aluminum oxide
• Backing: Heavy fiber
• Arbor Hole: 5/8"
• Diameter: 4"
• Package Size: 25 discs per pack
• Available Grits: 16, 24, 36, 50, 60, 80, 100, 120
• Compatible Tools: 4" angle grinders

Key Features & Benefits

• Heavy Fiber Backing: Rigid backing withstands the demands of angle grinder use
• Wide Grit Range: 16–120 grit covers aggressive removal through fine finishing
• Reliable Performance: Consistent aluminum oxide abrasive for dependable results
• Compact 4" Size: Ideal for tight spaces and smaller angle grinders
• Pack of 25: Economical supply for production use

Recommended Applications

• Weld blending and grinding on mild steel
• Surface preparation and rust removal
• Deburring and edge cleanup
• Paint and coating removal
• Wood shaping and stock removal

Grit Selection Guide

• 16-24 Grit: Maximum stock removal, heavy weld grinding
• 36-60 Grit: General grinding and blending
• 80-120 Grit: Surface conditioning and fine finishing

4" Compact Grinding Power. Full Grit Range. 25 Discs Per Pack.