Flaunt your prized commercial urethane dumbbells & competition kettlebells in immaculate style. This swappable storage shelf is the choose-your-own-adventure of home gyms. Opt for two dumbbell shelves, two kettlebell shelves, or mix and match with one of each. With several lengths to choose from and a 1,200lb capacity, you can make the most of your space. Here's the scoop: Two 34″ dumbbell trays fit our 85-100lb set of commercial dumbbells. Two 49″ dumbbell trays fit our 55-80lb set of commercial dumbbells. Two 69″ dumbbell trays fit our 5-50lb set of commercial dumbbells. The 49″ kettlebell shelf can handle 5 competition kettlebells side-by-side. The 69″ kettlebell shelf fits 7 competition bells side-by-side. Where does that leave you? We don't know. We haven't seen your house, and math is stupid. But we have faith that you'll figure it out (if not, our customer service team will help). IMPORTANT: If using interchangeable weight racks for non-B.o.S implements, please ensure that you’re selecting the correct length of tray/shelf for your needs.