Related Products Diamond lap disk 6” PSA backing 360 grit $37.50 excl GST Electroplated diamond core drill, 35mm dia. 10mm shank. $42.00 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: 450035 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.