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. 3 Wheel, 4 Speeds, 1 HP 3PH\r\n