Related Products Expanding drums, 8″ x 3″ $200.00 excl GST Electroplated diamond core drill, 6mm dia. 8mm shank. $10.00 excl GST Diamond solid drills 2.5mm dia. $3.00 excl GST Electroplated diamond core drill, 8mm dia. 8mm shank. $13.00 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 TweetPin It Product code: 450008 Category: Core drills. Tags: core drills, Diamond drills, glass, glass work, lapidary.