Extra long ratcheting combination “GearWrench” wrenches are specially designed with a ratcheting box end that requires only a 5 degree (6 degree for smaller sizes) movement to turn a fastener. The “Surface Drive” box end (12 point) virtually eliminates the rounding of fasteners. Sturdy all metal construction, fully hardened, nickel chrome plating with a mirror finish. Packaged in a unique self-demonstrating package. Also available in a set.5/16"