The HART 1/4 Mini Air Die Grinder is built with durable and lightweight aluminum housing. The cushioned grip provides extended use with less fatigue. The safety trigger prevents accidental starting. The compact size is suitable for working in confined spaces. This tool delivers 25,000 revolutions per minute and is ideal for a variety of weld breaking, deburring, polishing and grinding tasks. HART Air Die Grinder,an economical tool for garage, molds and dies, and many other DIYers. Durable and lightweight aluminum housing with cushioned grip Compact size is suitable for working in confined spaces Air exhausts from the rear of tool. Specifications No Load Speed: 25,000 RPM Collet Size: 1/4" Avg. Air Consumption: 3.5 CFM @ 90 PSI Operating Pressure: 90 PSI Air Inlet: 1/4" NPT Recommended Hose Size (ID): 3/8" Includes: (1) 1/4 in. Mini Air Die Grinder, (2) Wrenches, (1) 1/4" NPT Male Plug, and (1) Operator's Manual Maximum speed 25000 rpm Weight 0.8 lb Power type Manual Power grinder type Universal Rec. use Polishing Brand HART Features Easy To Control Accessories (2) Wrenches, (1) 1/4 NPT Male Plug Number of speeds 1 Is variable speed N Assembled product dimensions (l x w x h) 5.83 x 1.42 x 2.36 in Model AT-7032BW