The Mueller-Kueps Micro Die Grinder, No. 297 001, is a mini composite tool ideal for precise grinding and milling with a variable speed twist throttle giving users superior speed control. The tool features maximum concentricity through its precision collet, minimal vibration, and less kick back. It also has a low noise level and is easy to handle due to its BIONIGRIP surface. Air exhaust through hose to the rear.