DEWALT DWMT70783 straight die grinder features a light weight aluminum body with an ergonomically designed cushion grip for user comfort and ease. This grinder has a touch control trigger for easy user control. It has a 1/4 In. air inlet, works with 1/4 In. and 1/8 In. collets, and a safety throttle lever for protection. The DWMT70783 grinder offers rear air exhaust to direct away from the tool. It operates at a speed of up to 25,000 RPM. It is backed by DeWalt's 3 year limited manufacturers warranty.