The FTS-S is designed specifically for an obsolete Luxeon LED. This lens is not compatible with the Rebel line of LEDs. We are no longer stocking the FTS-S, however it is still available to order.

The Ring Spacer is required to couple Lambertian FHS lenses directly onto Lambertian LEDs if you are not using a staked holder. These spacers are compatible with Luxeon Lambertian I Stars and Luxeon Lambertian I, III, and V Emitter LEDs,

Ring Spacers are included with each lens holder. Only order this part if you need additional spacers.