Related Products Diamond lap disk 8” PSA backing, 260 grit. $50.00 excl GST Diamond lap disk 6” PSA backing 100 grit $38.00 excl GST 120 grit silicon carbide, 1kg pot. $26.00 excl GST Electroplated diamond core drill, 25mm dia. 8mm shank. $33.00 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: 450025 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.