This filter can be used on any Lightforce 170 LANCE light. The wide-angle maximizes the beam spread, creating clear peripheral vision onto the side of the road and any hazards. It's easy-to-install, shatterproof and lightweight. These filters transform the beam into a soft edged flood light, especially useful when boating, camping or using as a general work light. Green filters are used most often for spotting animals with sensitive eyes. Decreased visible light signature.