TPSX1: Total Polishing Systems X1 20 inch variable speed 5 horse power diamond concrete floor grinder, 220 volt Weight: 400 lbs (480 lbs with included weights) Power: 220 single phase input with onboard inverter to 3 phase Motor: 5 HP | Grinding plate size: 2 X 10 inches Working Diameter: 20 inch Dimensions: 53" W x 30" L x 20" W