Review on 🔧 GearWrench 3/8" Drive Magnetic Swivel Spark Plug Socket 9/16" - 3931D: Excellent Tool for Spark Plug Replacement by Cesar Danger

Magnetic element that holds the spark plug at the end of the spark plug. This makes it difficult to align the tip of the spark plug in the magnet hole far up in the socket; especially difficult when removing the spark plug. The BikeMaster brand spark plug socket has a magnetic piece that is lower near the tip of the spark plug socket so it holds the spark plug to the base of the spark plug near the threads. This made it easier to install and remove the spark plug from the engine head. I bought both spark plug heads from both brands. So I gave this KD Tools spark plug boot 4 stars because it is more difficult to align the spark plug nipple with the magnet hole far inside the plug.