The Craftsman Hex Socket Set Standard and Metric Spreads Ratchet Speed and Torque to Your Hex Set The Craftsman 4-piece standard and metric hex-bit socket set comes with four sockets with a 1/2 inch drive. It includes 9/16 inch and 5/8 inch standard sizes, plus 14 mm and 17 mm metric sizes. The hex bit fits snug in a number of ratchets and securely grips stubborn nuts and bolts in furniture around the house, as well as automobiles and motorcycles ? making it a great addition to any mechanic 's or DIYers toolbox. Made from alloy steel and built to last for generations, you can pass this set on to your children once they begin assembling a toolbox. The Craftsman 4-piece hex socket set standard and metric makes the perfect addition to any toolbox, whether you work as a professional mechanic or act as the resident handyman or woman.