Related Products 16″ economy sintered continuous rim lapidary blade. 400x 1.3mm $210.00 excl GST Diamond lap disk 8” 360grit. PSA backing $50.00 excl GST 10″ economy sintered continuous rim lapidary blade. 250 x 1.2mm $75.00 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 Product code: 450008 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.