Master lap Diameter:6" If you haven't used sintered

If you haven't used sintered faceting laps before

Charge with polishing media such as cerium oxide

Sturdy and accurate: The molded nylon surface reduces potential scratching of your softer materials and won't corrode when used wet

For use with the SwapTop 6" flat lap machine or any machine using a 6" lap with a 1/2" arbor hole

Master lap Diameter:6" If you haven't used sinteredThis clear, acrylic master lap provides a flat surface to back your diamond discs and polishing pads for a smooth operation. Use on the SwapTop 6 flat lap machine or any flat lap machine that accepts 1 2 arbors. 6 and 8 diameters available. Specifications Diameter: 6" (152 mm) and 8" (203 mm) Arbor hole: 1 2" (12 mm) Thickness: 1 4" (6. 35 mm)