When designing the Lightweight Enhanced (LE) Castle Nut & End Plate System, Fortis came up with two systems that virtually eliminates the risk of your castle nut ever backing out. With the two lockdown systems (K1 & K2), they engineered a solution to install the castle nut onto the end plate that is not only robust, but also stands true to the Fortis brand of innovation and ingenuity. The K2 mechanism, in particular, features a unique locking lever that perfectly aligns and slots into the end plate, engaging with specific notches on the castle nut for a flawless connection. This precision-engineered fit ensures optimal performance without the traditional method of staking the end plate, eliminating common points of failure. Remarkably, this entire system weighs a mere .53 oz / 15 grams, highlighting our dedication to lightweight efficiency. FeaturesLightweight design at only .53 oz / 15 grams totalCastle nut and end plate are 7075 T6 Aircraft Grade AluminumQuick Detach Socket - 360deg...