"Some folks over tighten the Springy Coil to the hex arm and break off the bell end. Once you snug fit the Springy coil do not tighten the flat head screw more that 1/12th turn or 5 minutes on a clock."Comes with the flat head 4MM screw and 2MM allen wrench."The new Extra long Hex Arm was developed for bows like the Win Win compound
