This is a single filament bulb with dual contact base and parallel pegs. These bulbs are commonly used in marine or caravan situations. It is a drop in replacement for your current bulb and is constructed with super bright LEDs which are durable, shock proof and last for much longer.
This bulb is similar in brightness to a 21W incandescent bulb.
This bulb is dual contact and has parallel pegs on the side.
Note: This is a dual contact bulb with positive and negative supplied through the contacts on the end.