8″ Quality Diamond Discs for Flat Lap Machines. They have a 1/2″ arbor hole for affixing to the master lap. They are NOT pressure sensitive backs. Just mechanically clamped.

Hi-Tech Diamond electroplated diamond discs provide a flat grinding surface for both rough and fine grinding on stones and glass. Top-grade diamond powder is nickel electroplated uniformly onto a 1mm-thick steel disc, resulting in the highest quality disc available on the market. These diamond discs have a long lifespan because they are made of steel and are well-suited for more heavy-duty grinding. Diamond discs are used on Hi-Tech All-U-Need and Slant Cabber lap machines, and can be used on all other lap machines that accept 1/2″ arbors.

6″ and 8″ diameter discs are available in a large variety of different diamond grits.

Purchasing notes: Max RPM is 4,000. Discs require a backing plate.