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， 4 inch solid polyurethane non-marking caster wheel for easiest rolling of very heavy loads on hard surfaces and most flooring. 360 degree swivel with foot brake.

HEAVY DUTY BUILT TO LAST: Industrial rated thick steel zinc plated construction resistant to most contaminants/weather. Tough， hard， smooth wheel for super-duty maximum capacity.

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: 375 lb capacity. Height 5-1/8 in， width 3-1/4 in， length 5-1/4 in， wheel 4 x 1-1/8 in， total weight 2 lbs. Authorized replacement for Snap-Loc Dolly.