8" x 2" Dual Wheel Rigid Caster - 1500 lbs Capacity8" x 2" Dual Wheel Rigid Caster High quality polyurethane tread mechanically and chemically molded onto aluminum core. Each wheel is 1" wide together making for a 2" wide total footprint. Two wheels makes swiveling and rotating easier by improving load distribution at sharp turns. Less rolling resistance makes for a low initial start force easy turning and extended life and performance. Tread: High quality polyurethane Core: Aluminum Bearing: Sealed