Draper badminton systems are fabricated from 2-3/8” OD, 3-16” thick high strength steel tubing, and are designed for use with 2-3/8” ID floor sleeves (sold separately). Posts feature a durable black powder-coat finish, and are shipped with all required hardware. #502100 one-court system includes two posts and one net, #502104 two-court system includes three posts and two nets. Net is fabricated from rugged #12 nylon, with twisted poly tie-off ropes running through top and bottom bindings. Posts and net can also be also purchased individually.