- Part of an expanded line of economical, standard duty grinders, the IR 301 packs valuable features into a compact package. Use it for grinding, edge-breaking, deburring, porting, and polishing. Wherever space is tight, its right-angle configuration provides easy access.- Compact, lightweight, east to handle- Self locking throttle- Ball bearing construction for durability- Precision machined gearing delivers maximum power transferSpecifications:Free speed: 20,000 rpmWeight: .99 lb. (.45 kg)Length: 5" (127 mm)Average air consumption: 3 cfm, @ load 14 cfmSound (pressure/power): 90/103 dBARated power: .25 hpCollet size: 1/4"Air inlet: 1/4"