Cementex IB38-3 3/8-Inch Square Drive Extension Bar, 3-Inch High voltage 3-Inch extension bar Tested to 10,000-Volt and rated for use up to 1000-Volt AC and 1500-Volt DC 3/8-Inch square drive extension bar is designed to extend the reach of Cementex 3/8-Inch drive torque wrenches, ratchet wrenches, and sockets Made of steel, double insulated High visibility orange in color