Cross Pad Abrasive Type Coated Abrasive Material Aluminum Oxide Connector Size 1/4 In.-20 Grade Coarse Grit 80 Overall Diameter Not Applicable Series R228 Maximum Operating Speed 12 000 RPM Overall Length 3 in Overall Width 3 in Backing Material Cotton Backing Weight X Coating Coverage Closed Color Brown Compatible with Grainger Part Number 464P99 Compatible with Manufacturer Model Number 8834183164 Product Type Cross Pads