The Snap-Loc Wood Dolly Caster Steering Kit provides the ability to steer, direct, spin, and span more weight making it the easiest, fastest and safest way to move more in less time! THE PROBLEM: Cheap dollies have junky casters that don’t roll well, break often causing valuable items to dangerously fall and waste your time and money. THE SOLUTION: The Snap-Loc Wood Dolly has high capacity smooth rolling casters, is USA made to last a lifetime, offers optional E-Track Strap cargo anchoring to move everything with ease! You’re going to love it! Wood Dolly System also coordinates with the Snap-Loc E-Track Single System to secure cargo and items on pickups, trucks, trailers, racks, walls, floors, ceilings and more! DIRECTIONAL STEERING CONTROL: For use with the Snap-Loc Wood Dolly System, adding 2 Rigid Casters in the center of the Dolly length provides directional steering capability. INCREASES CAPACITY: Adding 2 casters increases Dolly capacity by 800 lbs. making heavy loads even easier to move, and provides additional support for preventing sag on longer length wood Dollies. VERSATILE SOLUTIONS: Dolly can still spin in place 360 degrees for tight maneuvering. E-Track Strap Kits for securing cargo and interlocking Dolly Kits also available. SPECIFICATIONS: Each Caster rated at 375 lb capacity. 7-1/2″ tall with 6″ x 1-5/8″ synthetic rubber wheel. Top plate 2-3/8″ x 3-5/8″ with bolt slots 1-3/4″ x 2-7/8″ on center. Washers are 1-1/2″. SLWC6EDF2: 2 Fixed Casters, 8 Screws, 16 Washers.