4-1/2" Aluminum Oxide Resin Fiber Discs — The Most Popular Angle Grinder Size

USA1 Abrasives 4-1/2" Aluminum Oxide Resin Fiber Discs are the most popular size for angle grinder use in metalworking, fabrication, and construction. 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. 7/8" arbor hole. Sold in packs of 25 discs.

Technical Specifications

• Abrasive Material: Aluminum oxide
• Backing: Heavy fiber
• Arbor Hole: 7/8"
• Diameter: 4-1/2"
• Package Size: 25 discs per pack
• Available Grits: 16, 24, 36, 50, 60, 80, 100, 120
• Compatible Tools: 4-1/2" angle grinders

Key Features & Benefits

• Most Popular Size: Fits the most common angle grinders in metalworking and fabrication
• 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
• 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 on metal fabrications
• 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

The Most Popular Angle Grinder Size. Full Grit Range. 25 Discs Per Pack.