Related Products Diamond core drills 3mm dia. $6.00 excl GST Electroplated diamond belt, 8″ x 3″ (200 x 75mm) 240 grit $245.00 excl GST Electroplated diamond core drill, 15mm dia. 8mm shank. $22.00 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: 450015 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.