|ST-308: HEATED OXYGEN SENSOR SOCKET
1/2" DR. x 7/8"(22mm) x 50mm long.
ST-309A:VACUUM SWITCH SOCKET
3/8" DR. x 7/8" (22mm)x 30mm long.
ST-307.C: VACUUM SWITCH SOCKET
3/8"DR. 7/8"(22mm) x 6PT x 80mm long.
Tapered 12m/m and 18m/m threads designed to start and remove carbon & dirt or straighten damaged threads in spark plug hole.
Use with deep socket, open ends or boxes wrench.