Pins on either side of the base lock these bulbs into sockets.

These bulbs are small, but very bright, so they're often used in flashlights and optical instruments such as projectors and microscopes.

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

Disinfect and sterilize air, water, and surfaces with shortwave ultraviolet radiation.