SPARK PLUG HOLE THREAD CHARSER_hex 21mm ~ 22mm
ST-23034A ~ ST-23034D
* those threads designed to start and remove carbon and dirt or straighten damaged threads in spark plug hole
* use with ratchet handle and deep socket or suitable wrench
| item no. | size |
| ST-23034A | hex 21mm x M18 x 1.5p |
| ST-23034B | hex 22mm x M14 x 1.25p |
| ST-23034C | hex 22mm x M18 x 1.5p |
| ST-23034D | hex 22mm x M12 x 1.25p |
