New Hejnar Photo Long lens support bracket and 8 inch rail. Bracket can be mounted to 8 inch rail with a screw if you are using only one lens, or can be mount inside clamp if you are using it with various lenses and need to adjust height quickly (clamp sold separately) If you own long lens with lens foot rail can be mounted directly to the bottom of the foot in best position for balancing purpose. If your lens does not have mounting foot you need to mount clamp ( sold separately or look for LLSP2 ) onto rail