Each FLEX ERA® 1 Light comes standard as a Master Kit with all 3 variant beam pattern lenses and this is one of those lenses sold as a replacement part. If you lost yours or if yours became damaged or unusable, this Spot Beam lens is a direct fit on all FE1 lights. Able to easily be installed in a matter of minutes. Sold individually.FEATURES-Spot Beam Pattern-Includes new O-Ring-Easy Installs by Removing Four Bolts On FE1 Lights-Fits on all FLEX ERA®1 LightsSEE FURTHER - SPOT BEAMSpot beam lights penetrate deep into the night and produce a tighter, more focused circular beam of light that reaches far down the trail to see the horizon at higher speeds. Because this light pattern is very narrow, there is not much light on the sides. Spot beam lights are best when paired with other beam patterns to fill the areas closer to the vehicle, for a complete area of light beam coverage.