Taper Shank Tool Holder, Taper Size SK50 This listing is for each. Technical Specification Item Taper Shank Tool Holder Taper Size SK50 Projection 63.00mm Coolant Fed Coolant Through Nose Dia. 35.00mm For Shank Type Straight with Inclined Clamping Surface For Use With Cutting Tools Material - Machining High Speed Steel Overall Length 6.4900 in Shank Length 63mm Standards JIS B 6339 Taper Type Steep