This 1-3/8 inch socket， 12 point is a standard depth socket that you can use for most jobs that call for a 1-3/8 inch socket. It will fit on any of your 3/4 inch drive ratchets or socket drivers. You can even use it to handle deep jobs with an extension or a magnetic driver. Do virtually any job without dealing with stripping nuts and bolts thanks to a 12 pt. design. The Craftsman 1-3/8 inch socket， 12 point is made of steel， making it a durable tool that can take a beating without bending or breaking. The metal is polished to a high shine that wipes clean easily， letting you keep your toolbox looking professional. It will keep its shine and strength for many years， even generations that put it to good use.