Expansion Stem Swivel Caster W/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.