This die grinder has an 83 degree offset angle. Ergonomically designed gearless motor (the motor is in the head, not the handle). The collet is 1/4 capacity, but the tool accepts 1/4, 3mm and 6mm. The drop-in motor, hardened steel cylinder maximizes air utilization, rear exhaust and enhanced muffler system. Its lightweight, composite housing reduces vibration and is thermal-insulated to prevent hot or cold air transmission to the operator. Rear exhaust over hose further reduces noise levels by as much as 8 db. It eliminates exhaust from operator/work place. the 3-3/4 low profile provides greater operator control to access hard to reach areas. Gearless motor decreases downtime and lessens repair expense when compared to geared tools. Product Features:Aluminum housingFree Speed: 25,000 rpmAir Pressure; 90 PSIHose Size: 3/8Air Inlet: 1/4 nptCollet size: 1/4Horse Power (HP): .03Average Air Compsumption: 10 cfm