5 piece tungsten carbide burr set – (double cut) suitable for steel, cast iron, light aluminium and non-ferrous metals Shank Diameter x Length 1/4″ x 6″ (inch)Ball Diameter SD-3, 3/8″ SD-5, 1/2″ (inch)Cylindrical Radius End (Dia. x Length) SC-5 1/2″ x 1″ (inch)Tree Radius End (Dia. x Length) SF-5, 1/2″ x 1″ (inch)Tree Pointed End (Dia. x Length) SG-5, 1/2″ x 1″
