Akro-Mils RU844HR1627 Solid Deck Lips Up Powder Coated Steel Dolly 16-Inch x 27-Inch with 4-Inch Polyolefin Swivel Casters, Grey Heavy Duty All Welded 13-Gauge Steel - Made in USA 4" Polyolefin x 1-1/4"bolt-on casters for easy replacement. 1000 lb capacity Solid surface with 1-1/2" lip turned up for a contained area Outside dimensions listed