Review on Caldera Thin Wall Spark Plug Socket 12-Point, 14-mm: Ultra-Fit Solution for Precise Spark Plug Work by Stephen Johnson

Spark plug head worked great on 135i N55 engine. The mechanical spark plug pins secure the spark plug excellently when installing or removing the spark plug. When installing a new plug, I encountered a scenario where these fingers grabbed the plug I was installing with more force than the socket was secured in the 3/8" socket extension, causing the socket to detach from of the extension released (and stayed in). . my engine), but after reconnecting the extension cord to the Caldera outlet, I was able to unplug the outlet from the spark plug and remove the outlet from my car's engine. Overall a great product that works as advertised.