For wet or dry application; Disc speed 180 rpm; grinding path: 18?; Up to 200lb weight; 110 Volt; 15 Amp; Soft start DC 1.5Hp motor; Disc speed: 180 rpm; Grinding; path: 18÷; Equipped with 3 weights; Dust port; 4 gal. Water tank; Capable of carrying 240lb on top of its own 90lb weight (totaling 330lb); Splash guard; Extra wide (22 inches) handle; Amp. meter; Production rate; grinding; polishing terrazzo or marble: 100 to 150 sq ft/hour/step