Bare-Tool Hitachi G18DLP4 18-Volt Lithium-Ion 4-1/2-Inch Angle Grinder (Tool Only, No Battery) Tool body compatible with all Hitachi Lithium Ion, NiCd and NiMH 18V post-style batteries High torque motor with no-load speed of 9,100 RPM to power through tough cutting and grinding applications Slim body design with soft touch grip for improved control and comfort Slide switch with quick off feature to immediately shut tool down for added safety Removable side handle improves comfort and control