Related Products Diamond core drills 3mm dia. $6.00 excl GST Thin premium lapidary blades 150 x 0.5 mm $65.00 excl GST Convex diamond carving wheel 4″ x 1/4″ 360 grit $100.00 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 Product code: 6b16e7e79f10 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.