TM340-312 | ITM 1/4in Die Grinder Collet 25000 rpm Features Ultra compact design with soft rubber grip. Rear 4-speed regulator. 360° adjustable exhaust. Specifications Collet Size: 1/4 Free Speed: 25 000rpm Average Air Consumption: 113 L/min Length: 173mm Air inlet: 1/4 Weight: 0.39kg