These bulbs are sized to fit tight spaces such as signs, control panels, indicators, and flashlights.

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

Commonly used in signs, instruments, indicators, and flashlights.

Also known as beacon lights and signal lamps, these bulbs provide high-intensity light so they're often used in security warning devices and machinery.

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