•12-gauge steel shelves •900-lb. capacity •3" polyurethane casters •All-weldedQuality construction ensures long service life. Shelves include 1 1/2" lips and are supported by 1 1/2x1 1/2, 1/8" thick uprights. 10"D instrument shelf is designed with the front lip down for easy access. All swivel casters. Long-wearing, military blue enamel finish. Made in USA.