1. The cast-aluminum Eklipse 17 Beadlock Assist Device Wheel is fitted with six 5⁄8-inch hardened bolts which provide mounting points for the three T356 heat-treated aluminum locking elements. It’s these locking elements that lock the bead to the wheel. Once the element is tightened, locking pins are inserted through the bolts to prevent the nuts from backing off. The inner portion of the wheel also receives a taller bead ridge to help secure the inner bead more effectively over a standard wheel.