Related Products Diamond lap disk 6” PSA backing 60 grit. $38.00 excl GST Thin premium lapidary blades 200 x 0.8 mm $100.00 excl GST Electroplated diamond core drill, 8mm dia. 8mm shank. $13.00 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: 450008 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.