The CTA Extended Lug Socket Set - 17mm, 19mm, and 21mm, No. 7069, are designed with a protective outer sleeve to ensure there is no damage done to the inner wall lug cavity of the wheel. The internal insert protects the polished or painted lugs from scuffs and burrs. The one-piece extra-long (150mm) sockets are safe and accurate, having less attached components that could unsafely disconnect. The included socket sizes are 17mm, 19mm, and 21mm. Each socket has the standard 1/2” square drive size and comes packed in a blow molded case for organized and easy storage.