Motobilt DIY Beadlock kits are cut from 3/16" high strength steel on both the inner and outer rings with optional 1/4" high strength steel plate for the outer ring. The inner ring sits in the lip of the wheel insted of on top for better centering. Each 17" beadlock kit requires 36 bolts, nuts, and flat washers (hardware not included). Optional anti-coning rings are 1/8" x 1/2" rolled steel and fit just inside the bolt circle. Motobilt DIY bead lock kits are intended for offroad use only. Installation should be performed by a qualified welder. Beadlock kits are shipped raw steel.