"The Milwaukee M12 Cordless Lithium-Ion Rotary Tool utilizes a powerful 12V motor and Milwaukee's Redlithium battery technology battery sold separately to produce unmatched performance and increased run time. The size and versatility of this cordless rotary tool make it an indispensable tool for maintenance contractors, electricians, plumbers, remodelers and more. The tool runs from 5,000-32,000 RPM and is managed by a variable speed dial for fluid control. The collet is completely compatible with all 1/32in.-1/8in. shank accessories providing the user access to thousands of cutting, grinding, sanding and polishing solutions. SAVE MONEY by replacing or adding specific tools that work with the M12 Lithium-Ion battery and charger you already own. The Milwaukee M12 bare tool system lets you choose the tool you need to get the job done - without buying a complete kit. Add a Milwaukee bare tool to your M12 cordless system today. Battery Type Lithium-ion, Speed RPM 32,000, Amps 12, Storage Type None, Collet Size in. 1/8, Tool Weight lbs. 1.3, Variable Speed Yes, Cordless Yes, Volts 12, Batteries qty. 0. Tool only battery sold separately Powerful 28V motor delivers unmatched performance under load 1/8in. collet is compatible with all current rotary tool accessories Variable speed 5000-32,000 is up to 10 faster than the competition Compact and lightweight, only 9.5in. long and 1.3 lbs. Grinder style exhaust ports and protected front bearing deliver up to 10X the tool life"