1/2″ drive face pin spanner wrench for removing the head (gland nut) on many brands of hydraulic cylinders typically found on agricultural loaders, and compact tractor loaders/skid steers. Also known as a bobcat cylinder head tool. This tool performs as well as the 1/2″ drive OTC tool we offer except this one is imported. Adjusts from 1″ to 3-3/4″ diameter pin centers, and pins are reversible for 1/4″ or 7/32″ pins (actual sizes approximately .245″ & .220″). Allen key for adjusting pins is included. If you need a tool for commercial construction equipment such as Case or Ford/NH Backhoes, we recommend you Click here for our 3/4″ drive tool We are Fox Machine, Inc. of Norway ME USA, If you have any questions please contact Dean at FoxKits seal kit store.