Related Products Flat diamond grinding wheel 6” x 1.5” 60 grit $185.00 excl GST Diamond lap disk 8” PSA backing, 180 grit. $50.00 excl GST Diamond lap disk 8” PSA backing 3000 grit $48.00 excl GST Electroplated diamond core drill, 30mm dia. 10mm shank. $38.00 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: 450030 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.