Replace bulbs in tight spaces, such as those in indicators and vehicle lights. Pins on either side of the base lock these bulbs into sockets.

Often used in automotive dashboards, instrument panels, appliances, and indicators. A flat, pinched base presses directly into the socket to hold these bulbs in place. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

Replace your fluorescent bulbs or upgrade to LED. These light bulbs are the most common tubular bulbs for fixtures inside plants, warehouses, and offices. Select a light appearance to match your existing lighting. If you’re not sure what temperature you need, choose a bulb with more than one light appearance. You can adjust the temperature with a switch.

The sealed assembly withstands the rigors of outdoor use. In addition to using these bulbs in vehicles, they can be used for spot, flood, and emergency lighting. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

Often used for general task lighting and in flashlights, projectors, and microscopes, these bulbs are small but very bright. To replace a bi-pin bulb without a trade number, match the base number, voltage, and wattage. The base number reflects the pin spacing from center to center in millimeters—for example, G4 base pins are 4 mm apart. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.

Often used in taillights and brake lights. These bulbs have two filaments that operate at different brightness levels, with the second filament shining brighter when activated. Brightness is measured in lumens; the higher the lumens, the brighter the bulb.