Related Products Diamond lap disk 6” PSA backing 180 grit $37.50 excl GST Flat diamond grinding wheel 8” x 2” 240 grit $250.00 excl GST Quantity Add to cart Product added to wishlist. Description These electroplated wheels are a fantastic tool for both lapidary and glasswork. All come with a 1″ arbor with bushings to reduce the arbor to 3/4″, 5/8″, and 1/2″. Add to WishlistProduct added! Browse WishlistThe product is already in the wishlist! Browse Wishlist Share Product code: 526100 Category: Grinding Wheels. Tags: diamond tools, diamond wheels, glass, glass work, Grinding wheels, lapidary.