Related Products 220 grit silicon carbide, 500g pot. $15.00 excl GST Electroplated diamond core drill, 50mm dia. 10mm shank. $55.00 excl GST 14″ economy sintered continuous rim lapidary blade. 350x 1.3mm $180.00 excl GST Electroplated diamond core drill, 20mm dia. 8mm shank. $28.00 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: 450020 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.