Description 1/2 Inch Drive Ratchet Or 7/8 Inch Wrench; 1-3/16 Inch; Standard; Oil Sender Unit Socket; Heat Treated Alloy Steel; Single; Used On 1987 To Current GM Including Chevy/ Buick/ Cadillac/ Oldsmobile And Pontiac With 2.0/ 2.5/ 2.8 And 3.0 Liter Engines