Wheel Assembly - SX-1 - Complete - Front - Black Wheel/Blue Hub - 21x1.6 Moose hubs are made from forged 6061-T6 aluminum with a high-quality anodized finish that doesn't fade, Our stainless steel spokes are made from T3002H stainless for maximum tensile strength, Moose uses extruded 7000 series aluminum for durability and strength, Rim is treated with a 3-stage heat treatment process for added strength, Wheel comes complete with OEM style spacer for your convenience, All spokes are polished to maintain surface strength