Stranger Crux XL Rim material: 6061 aluminum diameter: 20 inch width: 42mm height: 21mm ERD: 382mm (effective rim diameter) lacing: regular spokeholes: 36 color: black additional information: extra wide profile that increases strength by allowing the impact forces to spread across a greater area offset nipple holes for additional lateral support recommended for use with 2,20 inch and larger tires double wall design