Alltrade 648446 1/2"" Dr Oil Pressure Send 1/2"" dr 7/8""(22mm) Oxygen Tool solutions for most all situations Built to exceed tool standards Made with precision and quality in mind Highly durable For removing and installing extra-long 1-3/16 inch hex oil pressure sending unit 1/2 inch drive socket features a 4-1/4 inch recess for switch body Socket can also be turned with a 1-1/8 inch end wrench on the external hex Chrome vanadium steel for strength