Feature:1. The pneumatic angle grinder has complete accessories, which are often used for removing burrs, grinding welds, sanding operations, etc.2. Using high accuracy bearing, hardened gear and fine movement, has strong power and high work efficiency.3. This angle grinder has comfortable handle grip, small volume and light weight for convenient carrying.4. The free speed is 11000rpm, the running is stable and low vibration, the operation is more convenient and safe.5. Made of alloy steel, wear resistant and corrosion resistant, not easy to deform after long term use.Specification:Item Type: 4in Air Angle GrinderMaterial: Alloy steelModel: KP-631Working Pressure: 0.6-0.8MPAIntake Connector: 1/4inFree Speed: 11000rpmGrinding Wheel Diameter: Approx. 100mm / 4in Package List:2 x Wrench1 x Handle1 x Grinding Wheel 1 x Polishing MachineNote:Before use, confirm whether the chuck is fixed properly to ensure that the air nozzle does not leak.