THE MOST COMPLETE AND FLEXIBLE HELMET ACCESSORY MOUNTING SOLUTION AVAILABLE KNUCKL(TM) is a modular helmet accessory mount for use on helmets equipped with accessory rails such as Ops Core, Team Wendy, Crye and others. It offers tension-adjustable 3-axis articulation and the ability to mount up to two accessories depending on your mission. The mounting interfaces accept most Unity FUSION accessories. It also incorporates a socket to accept the Wilcox Retention Lanyard to retain the gear during a break-away. NOTE: KNUCKL is not compatible with Team Wendy Helmets when used in conjunction with helmet mounted hearing protection. If you are looking for this combination, please loo Mfg: Unity Tactical