This heavy duty， easy rolling， well built， long lasting caster fits all Snap-Loc Dolly System products and is the perfect replacement caster for upgrading other dollies and carts. The Snap-Loc Dolly System is 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 Dolly has high capacity smooth rolling casters， is USA made to last a lifetime， offers E-Track Strap cargo anchoring with Push-Panel Bars that transform to move everything with ease. You're going to love it. 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.

Easy rolling: precession ball-bearing， 6 inch tubeless pneumatic air filled rubber caster wheel for use on hard surfaces， dirt， gravel， grass and most interior flooring. 360 degree swivel.

Heavy duty built to last: industrial rated thick steel zinc plated construction resistant to most contaminants/weather. Thick rubber tread grip tire provides less noisy less bouncy cushioned ride.

VERSATILE SOLUTIONS: Slotted top plate fits industry standard 2-3/8 x 3-5/8 inch. Bolt hole slots 1-3/4 x 2-7/8 inch on center. Great replacement on 4 wheel dolly carts， platform trucks， panel carts.

SPECIFICATIONS: 300 lb capacity at 30 lbs psi max pressure. Height 7-1/2 in， width 4-1/4 in， length 6-1/4 in， tire 6 x 1-5/8 in， total weight 3.4 lbs. Authorized replacement for Snap-Loc Dolly.