I have an old set of four 2 inch steel casters and one of them was missing the ball bearing in the swivel. This item met all critical sizes, so I bought this to replace my only broken wheel. The difference is only cosmetic, this wheel has holes around the webbed hub and mine had a solid webbed hub. It's not mentioned in the description but this wheel is painted silver although I expected it to be pure cast iron. The bracket is made of galvanized steel and is no different than most regular casters.