I have for sale a Schlite sight light. This is a simple sight light with 8 various brightness levels. It has a blue LED. This one attaches to the end of the fiber protective tube directly. To secure it you can either glue the end in or use a little electrical tape. It comes as shown. It is powered by replaceable CR 2032 batteries. I used some removable velcro straps to strap it to my sight bar but I no longer have those. This is a reliable simple light that works well. PM all offers.