This Snap-on double ratcheting box wrench is a high-quality tool that is perfect for any mechanic or DIY enthusiast. A 1/4” and 5/16 has 6 point part number GR8105A also With a 12-point drive type and sizes of 3/8 and 7/16 also 1/2, 9/16, this wrench is designed to handle a variety of tasks. The SAE system of measurement ensures that you have the right size tool for the job, while the United States manufacture ensures that you are getting a quality product. The set includes two pieces, with the manufacturer part numbers GR8105A, GR1618A and GR1214A. This wrench is a great addition to any toolbox and is perfect for automotive applications.