Related Products Spherical radiused grinding wheel 4” x 1.5” 80 grit $145.00 Hard diamond grinding disk (for angle grinder) 4.5” dia 50 grit $35.00 12 x 12mm diamond bands, soft type 1500 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. 1500 grit. Add to WishlistProduct added! Browse WishlistThe product is already in the wishlist! Browse Wishlist Share Product code: 4011500 Category: Diamond point sets and bands. Tags: diamond points diamond bits, glass work, Grinding wheels, lapidary.