Features a rolled rim lip for the custom look and detailed CNC machine work from the center of the hub to the edge of the rim All rims are CNC machined from radial forged 6061-T6 aluminum for maximum road durability and strength-to-weight ratio Rims accept Arlen Ness hub kits, which allow full wheels to be assembled in minutes with basic tools Arlen Ness hub kits must be purchased separately to install.. RIM P-CROSS 18X5.50 BLK