Nonsparking sockets won’t spark when tightening and loosening fasteners making them suitable for use in locations where flammable vapors or combustible liquids are present. They require the use of a nonsparking hand drive tool such as a nonsparking ratchet or a nonsparking breaker bar to turn the socket and rotate the fastener. Insulated sockets protect against electrical shock from live electrical circuits and can be used near electrical components. Nonsparking and insulated sockets provide more contact to the fastener head than an open-end wrench and can apply more torque since the enclosed head is less likely to slip off the fastener. Drive tools have a square nub called the drive that fits into the same size drive end of the socket for secure attachment to the hand drive tool.