Fiber Disc Back-Up Pad; Type Smooth Bore, Spiral Pattern, Medium; Size 4 Inch Diameter; Material Rubber; Used with Coarse Grit; Includes 5/8 Inch Nut; Application Grinding

Rubber Back-Up Pads - Use with Coarse Grits; Spiral Ribs Provide Contact Points and Form Channels for Airflow, Extending Disc Life 30 to 50%; Larger Air Holes Provide Cooler Operating Area and Longer Abrasive Disc Life; Flexible Rubber Pads are Recommended for Contours and Rigid Pads will Last Longer on Aggressive Grinding Applications; Made in USA