This is a ST Racing Concepts Lock-Nut style Outer hinge-pin kit for Losi LST2 or Muggy Monster Trucks. Are you tired of loosing those E-clips on your Muggy or LST2's outer suspension hinge-pins? This ST Racing Lock-Nut style outer hinge-pin kit offers the perfect solution. Replacing the E-clips with nylon insert lock nuts for a secure, worry free, installation of the outer hinge-pins. Our outer hinge-pins are made of high-grade steel for extreme durability and polished for the smoothest suspension component operation. Entire set includes 8 hinge-pins, 8 lock nuts, and shims.