Pro 2 Breakaway Rim - Double Spring - Airtime Hoops
THUNDERBAY 18 inch Standard Double Spring Flex Reinforced Wall Mounted Basketball Rim, Two Nylon Nets Include One Nightlight Basketball Net : Amazon.sg: Sporting Goods
Heavy Duty Double Rim | Order Double Rims for Your Basketball Court - Trigon Sports
Why Do Some Basketball Hoops Have Double Rims? - HOOPSBEAST
Front mount double-rim basketball goal with no-tie netlocks – bisoninc