Specification: Cutting Wheel Size: 3 inch Maximum Rated Speed: 22000rpm Working Pressure: 90 PSI Average Air Consumption:4 CFM @ 90 PSI Housing Material:Die-cast Aluminum Air Inlet:1/4 Recommended hose size:3/8 Package Include: 1x Collet wrench 1x L wrench 1x 1/4 NPT male plug 6Pcs Cut off wheels Features: 1.Die-cast aluminum body, wear resistant and anti-oxidative,ine workmanxhip keeps long service life 2.3heavy duty air cut off tool is widely used in variety of applications, great for cutting steel rods, metal plate and muffler clamp 3. High speed rotation, easily cut off metal materials. 4. Simple structure, easy to assemble and maintain. 5. Compact and lightweight structure, ergonomic grip offers comfortable handling Application: Powerful grinder features a composite grip for superior ergonomics and comfort and can be used in a variety of applications, including cutting, polishing and grinding,porting, weld breaking, deburring.