Pins on either side of the base lock these bulbs into sockets. Pins are directly across from each other.

Offset pins on the base lock these bulbs into sockets. One pin is slightly higher on the base than the other pin.

Often used in recessed can fixtures and track lighting, these bulbs produce a focused beam of light. Beam angles range from 25° to 120°.

Replace metal halide, high-pressure sodium, and mercury vapor light bulbs with longer-lasting, energy-efficient LEDs.

Switch from the yellow light of high-pressure sodium to the white light of metal halide without changing ballasts.

Often used in task lights, these four-pin wedge base bulbs are comparable to PL, Dulux, and Biax bulbs.

Energy efficient and long lasting, these four-pin bulbs are often used in task lights. They’re comparable to PL, Dulux, and Biax bulbs.