Nickel bond diamond cones are an excellent resource for working bottles and inside curves. These cones are approximately 3" at the base and 3" in height. Standard sizes available are 1"-14 female and 5/8"-11 female. Cones are available in Coarse (100g), Medium (220g), and Fine (600g). All cones include a 3/16" center hole for through-shaft water systems.