Related Products Diamond lap disk 6” PSA backing 1200 grit $37.00 excl GST Electroplated diamond core drill, 15mm dia. 8mm shank. $22.00 excl GST Diamond lap disk 6” PSA backing 260 grit $37.50 excl GST Hard diamond grinding disk (for angle grinder) 4” dia 50 grit $35.00 excl GST Quantity Add to cart Product added to wishlist. Description Electroplated, steel backed grinding disks. 50 grit. 100mm dia. Useful on glass or stone. Normally used on a water fed angle grinder, but will work dry. Add to WishlistProduct added! Browse WishlistThe product is already in the wishlist! Browse Wishlist Share Product code: 314050 Category: Grinding disks. Tags: diamond tools, glass work, Grinding wheels, lapidary.