The Leviton 10045 lamp holder is a single-circuit, keyless (no on/off switch) socket designed for incandescent lamps with a medium (E26) base. It features durable, glazed porcelain construction and is rated for use with lamps up to 660 watts and 250 volts. This robust lamp holder is ideal for various applications where a simple and reliable connection for lighting is needed. The 10045 also features a straight body with a 1/8-27 pipe cap, making it suitable for pipe mounting applications.