Item Name: Covington - 6" Combination Unit - Diamond - 110v 60Hz SKU: COV495DCU Description: The 6" Combination Unit is a compact diamond grinding and polishing machine built for smooth, quiet, controlled finishing work. It is constructed with sealed ball bearings mounted in rubber to reduce vibration and noise, a rustproof aluminum-topped Lam-I-Cushion base for stability, and a stainless steel main shaft to resist rust. The unit uses powder coated aluminum castings, and includes a hood and belt guard for safer operation during wet grinding and polishing. How it is used: This unit is used in coldworking to grind, shape, and polish glass after it has been cut or rough-shaped. The continuous variable speed control allows you to slow the machine down for delicate edge work and controlled smoothing, or speed it up when you need more aggressive material removal and faster polishing. A quick change hood and polishing buff make it practical for switching between grinding and polishing steps, and the adjustable cab and wheel rest help support the workpiece for steady, repeatable results. Dimensions: The product page does not list overall unit dimensions.