Efficiency and reliable performance combine in this GA 18 LTX G 5.2 18V 5.2 Ah Cordless Lithium-Ion 6,000 RPM Die Grinder (Tool Only) (600639860) from Metabo. It has a spindle lock for simple tool changes, and an S-Automatic safety shutdown that immediately disconnects power supply if the tool jams. The removable protective rubber cap makes for comfortable handling, while the patented air cooled technology helps prolong service life.