CRAFTSMAN Deep Impact Socket, Metric, 1/2-Inch Drive, 17mm (CMMT16078) 1/2-inch 17mm Metric Deep Impact Socket is engineered and constructed to endure high torque application with impact wrenches. This impact socket is specially designed to engage with the flats of fasteners to prevent rounding so it's time to turn up the torque and turn tough jobs into easy ones. Features CORROSION RESISTANT: Metric Socket have a black oxide finish INCREASED TORQUE: 6-point impact socket comes with fastener QUICK SIZE IDENTIFICATION: Impact sockets 1/2 drive comes with large markings Meets or Exceeds ASME Specifications USA SHIPPING estimates delivery times and we work to get your item to you as quickly as possible and within those times, but please know it may take slightly longer than the estimate.