These wheels feature Grant's exclusive dual-plane spoke design. This 3-dimensional hi-tech, dual-plane 4-spoke design offers a "world class look." The spokes are CRS steel in matte black. The wood wheels feature genuine hardwood walnut finish rims, rivets and black finger grips. 13,5 (343mm) Diameter and 3" (76mm) dish. A special steering wheel adapter for each vehicle is required.