For removal or replacement of Oxygen Sensors, Vacuum Switches, Oil Senders, Thermostatic Switches and Injectors. Cut away sections allow sockets to fit over wiring harnesses. 1/2" dr. x 29mm x 90mm (7mm slot). 1/2" dr. x 27mm (12pt) x 82mm. 3/8" dr. x 7/8Ó x 90mm (20mm slot). 3/8" dr. x 1-1/16Ó x 74mm. 3/8" dr. x 7/8Ó x 80mm. 1/2" dr. x 22mm x 50mm. 3/8" dr. x 22mm x 31mm.