Contact Arm Product Type Contact Arms Belt Width 5/8 in 3/4 in Wheel Material Rubber Material Steel Compatible Tool Series Dynafile Compatible Manufacturer Model Number 15400 40320 40330 40381 Belt Length 18 in Includes (2) Bearings Contact Wheel Assembly Shaft Platen Pad Density Hard Platen Pad Width 3/4 in Wheel Diameter 3/4 in Wheel Shape Wide Wheel Width 5/8 in