These bulbs are sized to fit tight spaces such as indicators and vehicle lights.

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

These miniature bulbs are sized to fit older telephone switchboards, signs, instruments, and indicators.

Use these bulbs in standard sockets, panels, and appliances.

Pins on the base lock these bulbs into sockets to withstand vibration.