Nickel bonded diamond domes are an excellent choice for working bottles and inside curves. These domes are approximately 3-7/8" at the base and 1-1/2" in height. Standard sizes available are 1"-14RH female and 5/8"-11RH female. Domes are available in coarse (100g), medium (220g), fine (600g). All domes include a 3/16" center hole for through-shaft water systems.