The high performance angle grinder has exclusive features such as complete electronic control and dual clutch protection. The patented dust ejection system ejects damaging dust and debris particles that enter the tool through the air intake vents. Wheel Diam: 4 1/2 in. Arbor Diam: 7/8 in. Amps: 8.00 A. Watts: 900.00 W [Max]. Speed: 10000 rpm [Max]. Spindle Thread: 5/8 in - 11. Includes: Side Handle, Wheel Guard, Inner Flange, Outer Nut.