Spider Mover's Dolly - 330-Lb. Capacity Solid 22.8in.L x 15in.W reinforced deck features a cushioned, skidproof polyethylene top with recessed bolts to help protect the cargo Interlocking edge design makes it easy to hook multiple Spider dollies together to form a larger mover (additional dollies sold separately) Four 3in.H swivel polyurethane casters with steel ball bearings provide smooth-rolling transport Sturdy handle is built into the deck for carrying to and from the work site Molded-in notches on each side allow for easy positioning under cargo