10R0401-43 Dotco 10-04 Series Precision Grinder. Dotco 10-04 Series Precision Grinders feature industrial bearings that provide long life expectancy. Dotco 10-04 Series Precision Grinders are designed for precision deburring and metal removal. Dotco 10-04 Series Precision Grinders are have compact and light weight composite housing. Dotco 10-04 Series Precision Grinders are roll throttle equipped. Collet Size: 3mm Collet Guard: With Free Speed (rpm): 60,000 Overhose: 4ft/1.2m Abrasive Capacity: 1/4” Carbide Burr, 1/4” Diamond Pin Type Housing: Aluminum Weight: 0.2lbs/0.09kg Overall Length: 5.8”/147mm Air Inlet Size: 1/8”