Related Products Flat diamond grinding wheel 8” x 2” 240 grit $250.00 excl GST 7″ economy sintered continuous rim lapidary blade. 180mm x 1.2mm $60.00 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.