DOTCO® 10L1112-36 Inline Extended Grinder, 10-11 Series Inline Grinder with 300 Series Collet Exhaust: Front Extension: 5 in Collet Size: 1/4 in Free Speed (rpm): 25,000 Abrasive Capacity: 1/2 in Carbide Burr, 1 in Mounted Wheel Type Housing: Aluminum Weight: 1.2 lbs / 0.54kg Overall Length: 9.8 in