EXPANSION STEM SWIVEL CASTER W/O BRAKE;FOR 1 5/8" OD TUBING;EXACT STEM SIZE = 1.435" OD;WHEEL SIZE 5";TREAD WIDTH 1 1/4";BORE 1/2" ID;DELRIN BEARING 3/8" ID;BEIGE HUB, GREY RUBBER, ;LOAD HEIGHT 6 1/4", MAX LOAD PER WHEEL LBS. 300;BLODGETT;OVEN SERIES (NON-STACKED UNITS): AC-500, CTB/R,; DFG(50,100,200), EF/EZE, FA/GZL, MARK V, ST300/400,; ZEPHAIRE E & G.