Sealed Ball Bearings Mounted in Rubber for Quiet and Smooth Operation Mounted on Rustproof Aluminum-Topped Lam-I-Cushion Base Stainless Steel Main Shaft Resists Rust Powder Coated Aluminum Castings Hood and Belt Guard Continuous Variable Speed Control from 800rpm to 1725rpm Quick Change Hood and Polishing Buff Adjustable Cab and Wheel Rest Available in 220V 50hz The 6 inch Combination Unit cuts grinds sands and polishes gemstone material all on one machine This unit is designed to take small work pieces from a rough stone to a polished finish Diamond The 6 inch Diamond Unit comes complete with one 6 inch Covington Gold Series diamond blade slab vise water valves drains two 6 inch x 1-1/2 inch metal bonded diamond grinding wheels 100g and 220g one 6 inch expandable drum one 2-1/2 inch x 18-15/16 inch diamond sanding belt 1200g five 2-1/2 inch x 18-15/16 inch silicon carbide sanding belts 400g one 6 inch x 5/8 inch-18RH aluminum head with leather disc attached 5-gram syringe of 50000 mesh diamond compound 2-ounce bottle of extender fluid sample kit 1 Koolerant polish powder brush dop sticks and wax a book about using diamond abrasives 1/3hp motor switch cord belt guard instructions and product guarantee