Brass is the perfect medium for the best heat transfer and low profile adapter.

Originally shared by CH-Ignitions

Brass is the perfect medium for the best heat transfer and low profile adapter. We understand this and hence, came up with 14 mm to 10 mm brass spark plug adapter for CM6 / Y82 spark plugs which allows you change the big spark plugs easily.

https://www.ch-ignitions.com/product/14-mm-to-10-mm-brass-spark-plug-adapter-for-cm6-y82-spark-plugs/
https://www.ch-ignitions.com/product/14-mm-to-10-mm-brass-spark-plug-adapter-for-cm6-y82-spark-plugs/