Related Products 16″ economy sintered continuous rim lapidary blade. 400 x 1.3mm $225.00 excl GST Diamond lap disk 8” PSA backing, 120 grit. $55.00 excl GST Electroplated diamond core drill, 50mm dia. 10mm shank. $55.00 excl GST Quantity Add to cart Product added to wishlist. Add to WishlistProduct added! Browse WishlistThe product is already in the wishlist! Browse Wishlist Share TweetPin It Product code: 6b16e7e79f10 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.