Powerful 8 Amp motor delivers performance and durability Trigger grip handle provides better control, reach & leverage 3-position handle provides optimal control Metal gear box for long life External brush doors reduce service time. Voltage: 120V/60Hz Amps: 8 Amp No Load Speed: 11,000 rpm Wheel Size: 4-1/2" Diameter Safety Lock-Off Switch: Yes Spindle Lock: Yes Spindle Thread: 5/8"-11 Cord Length: 6' Tool Length: 14" Tool Weight: 6.5 lbs CUL Listed