Harper Pro Steel Convertible Dolly/Cart - 700/900-Lb. Capacity, Model# DTBSK1935P Dolly features an oversized 18in.W x 9in. deep base plate to securely handle heavy or bulky loads One step posi-lock quick release latch allows rear casters to fold down and lock into place for use as a heavy-duty, high-capacity 41 1/2in.L x 13in.W cart Includes 48in. tall Super Steel handles with dual comfort grips for ultimate load control 1 1/4in. Super Steel oversized frame delivers maximum strength and durability Two 10in. all-terrain pneumatic tires and two 5in. swivel casters for smooth-rolling maneuverability