The Moonrays 18 watt Bayonet Base Replacement Light Bulb is compatible with 12 volt low Voltage landscape lighting. This clear 18 watt, 12 volt single contact bayonet bulb has an average lifespan of 500 hours, measures 2 inch long (50-mms) and is rated for 200 lumens. Not only are these bulbs perfect for illuminating gardens and walkways, they provide perfect accent, display and general lighting for a variety of applications. This bulb replacement works with all bayonet base lights. For best results, make sure to replace your bulbs with the same size and style of bulb that came with your original low Voltage light. Average lifespan of 500-hours and measures 2 inch overall length (50-mm)Great replacement bulb for low-voltage landscape lightingHas a 200 lumen ratingFor best results, make sure to replace your bulbs with the same size and style of bulb that came with your original Low-voltage lights2" long18 watt