Kastar Hand Tools 528 3/8"dr x 5/8"-Diameter Magnetic Spark Plug Socket. Unique design prevents damage to the spark plug's ceramic top. Magnet firmly holds the spark plug for easy installation and removal avoiding the chance of dropping and damaging the spark plug. Unlike sockets with rubber inserts, the permanent magnet in this socket will not wear out or be damaged by exposure to heat and oil.
Kastar Hand Tools