This rubber gasket and chrome light base fits the TecNiq S17 sidemarker light and is designed to provide a safe, attractive fit for their high-quality line of boat trailer lights in the S17 size. The light base will perfectly fit the S17 side marker light, with holes drilled to the same 2 inch spacing that the light has, so you can easily screw the light in through the base and directly onto your trailer frame or wherever you wish to mount the light. The chrome bezel light base gives a high-quality, premium look to your trailer, perfect for high-end boat trailers and jet ski trailers. If you are replacing your trailer lights with TecNiq S17 side markers or just need a new base for your current lights, this chrome base and gasket will give you great looks and performance for years to come!Specifications:- TecNiq S17 Chrome Light Base and Gasket- Width: 3.07 inches, Height: 1.46 inches- Screw Mounting Holes are 2 inches apart on center- Chrome Light Base fits into outer rubber gasket