Sizes 7.5-, 13.5- and 19.5-inch locking extensions for 3/8-inch drive socket wrenches, packaged in a tray. American-made set features SK Hand Tool's high polish SuperKrome finish, which protects tools from the harsh working environments found in today's workplace.

SK's locking extensions feature a SureGrip lock, which holds the socket on the extension. It prevents the socket from remaining stuck to the fastener. Four recess detents in socket drive square for quick attachment.