4 Wheels 8 Speeds 1 HP 3 PH. Electrostatic paint finish. \r\nSintered case hardened gears. \r\nBronze alloy main drive gear. \r\nNatural rubber, 60 shore hardness rollers. Calibrated spring support for roller adherence. \r\nPowerful, reliable motor with 2 speed switch. \r\n