Taper Shank Tool Holder, Taper Size SK50 This listing is for each. Technical Specification Item Taper Shank Tool Holder Taper Size SK50 Projection 160.00mm Coolant Fed Coolant Through Nose Dia. 44.00mm For Shank Type Straight with Lateral Driving Surface For Use With Cutting Tools Material - Machining High Speed Steel Overall Length 10.3100 in Shank Length 160mm Standards DIN 69871 AD/B Taper Type Steep