Spark plug insert with magnet

With 2 magnets, For use under difficult space conditions with actuating tools with 3/8" or 1/2" square drive or rotary pin Ø 8 mm, With powerful magnets in the hexagon surface, which hold the spark plug safely on the hexagon, Wide opening gives space to the spark plug and makes it easier to put on the socket in confined areas, The ceramic core of the spark plug remains untouched, Vanadium steel 31CrV3, chrome-plated, Heads finely ground