Cementex IS38-10 high voltage double-insulated sockets are tested to 10,000 volts and rated for use up to 1000 volts AC and 1500 volts DC. This 12-point 5/16" insulated standard length socket has a 3/8" square drive and is high-visibility orange in color. Also available in sets or individually in sizes from 1/4" to 1".