Tooless bit change Lockon switch for continuous use Auto-stop carbon brushes protect motor Makita MT Series Specifications -Shank Type: 17mm Hex -Blows per minute: 2,900ipm -Joules: 7.2j -Overall dimensions: 406mm -Net weight: 5.4kg -Continuous rating input: 900W -Power supply cord: 2.5m -Carbon brush: 105