This is a set of brand new black axle caps for a Popular Red Wagon Brand Wagon. They will fit any wagon with a metal set of 0.50 inch (1/2 inch) diameter axles. Each cap measures 1.5" and the hole is 0.50" (1/2 inch). THIS WILL NOT FIT SMALL, PLASTIC, FOLDING WAGONS or LITTLE WAGONS MODEL W5, ONLY STEEL & WOOD WAGONS THAT HAVE A 0.50" AXLE DIAMETER. PLEASE DOUBLE CHECK YOUR AXLE.