Review on SPS39 Drive Spark Plug Socket 9 by Tom Tofte

Didn't realize that after a few uses the rubber insert in the socket would lose its ability to hold the spark plug, as some other reviewers have noted. I was wrong. About 3 or 4 spark plugs in my spark plug replacement stopped pulling the plugs out of the deep hole they were in, making this socket as useful as any other deep 9/16 socket I've had. Don't waste money.