Sun CR18 Alloy Silver Polished Rims laced to Blackops Low Flange Flip Flop Sealed 32H hubs. Chrome spokes and nipples. Less than 5lbs for the pair. Fits most Mini or Junior sized racing bikes. Junior bikes usually have 20 x 1 3/8" wheels. You could put these rims on a mini or a Junior. Both 20 x 1 1/8" and 20 x 1 3/8" tires would fit these wheels. Pair. #74353