The new Delux Slim Wrench is the first of few new tools we have been developing. This 11/16" slim wrench is laser cut from solid steel and fits the Reactor,Revenge,and Rival Kingpins. At a mere 4mm thick, it slips on to allow the user to tighten the Kingpin without removing components. Also fits on the Reactor cushion adjustment nut old and new. An absolute must for your tool kit.