Contact Arm Product Type Contact Arm Assembly Belt Width 1/2 in Wheel Material Rubber Compatible Tool Series Dynafile Compatible Manufacturer Model Number 40324 Belt Length 18 in Features 4 000 sfpm Maximum Contact Wheel is Offset to Prevent Gouging For Flat Grinding Using Platen at or Near Corners and Edges of Large Radius Round Includes 1/2 in W Platen Platen Pad Density Hard Platen Pad Width 1/2 in Wheel Diameter 5/8 in Wheel Shape Crowned Wheel Width 3/8 in