This is a set of two optional ST Racing Concepts Aluminum Beadlock Rings, and are intended for use with the Pro-Line Epic & Split Six Bead-Loc wheel. For Slash and Slayer owners who are running the great Epic or Split Six beadlock rims, STRC offers beadlock Rings in different colors to choose from. These beadlocks are CNC Machined Aluminum (not stamped) and are extremely light weight compare to the stock Epic Rim beadlock rings (which are made of coated steel). 4 stock Epic steel beadlocks: 63 grams 4 STRC Aluminum beadlocks: 25 grams!!! This results in a massive reduction in rotating mass at the wheels allowing for faster acceleration and better suspension performance! These beadlocks are also approximately 1mm thicker than the stock Pro Line beadlocks providing a even better grab on the tire when installed.