It is hidden at the end of key bolts such as the rear flat fork shaft, steering column, engine hanger, etc., and is shaped like an ultra-thin hexagon nut with precision reverse threads and hardened steel ratchet teeth inside.During installation, tighten with an ordinary wrench, and the ratchet teeth automatically bite the end face of the bolt to form an irreversible mechanical lock, so that the bolt still maintains its initial torque under high-frequency vibration, shock, thermal expansion and contraction, and will not retreat on its own.Compared with traditional spring gaskets or rubber pads, Joint Lock is smaller in size, has 3 times higher vibration resistance, and can be disassembled and assembled five times repeatedly to maintain more than 80% of the locking force.The material is mostly 7075-T6 aluminum +stainless steel inserts, with anodized surface, which takes into account light weight and corrosion resistance.Simply put, it is to put a “safety lock” on the key joints of the motorcycle, allowing the rider to bend, jump, and attack for a long time without worrying about a loose screw destroying the whole vehicle.