Related Products Resin diamond belt, 6″ x 2.5″ (150 x 65mm) 280 grit $60.00 16″ economy sintered continuous rim lapidary blade. 400x 1.2mm $210.00 12 x 12mm diamond bands, soft type 3000 grit $15.00 Quantity Add to cart Product added to wishlist. Description 12mm x 12mm diamond bands are an alternative to solid diamond points. They fit on an expanding mandrel with a 3mm shaft. The diamonds are electroplated to a material substrate. 3000 grit. Add to WishlistProduct added! Browse WishlistThe product is already in the wishlist! Browse Wishlist Share Product code: 4013000 Category: Diamond point sets and bands. Tags: diamond points diamond bits, glass work, Grinding wheels, lapidary.