Akro-Mils RU854SS1627 Open Angle Structure Lips Up Powder Coated Steel Dolly 16-Inch x 27-Inch with 4-Inch Semi-Steel Swivel Casters, Grey Heavy Duty All Welded 13-Gauge Steel - Made in USA 4" Semi-Steel x 1-1/4"bolt-on casters for easy replacement. 1000 lb capacity Open structure with 1-1/2" lip turned up Outside dimensions listed