【Selected Friendly Material】The main body of this outdoor volleyball/badminton poles is designed with thick steel plate, enough for bad weather and intense games for long-term use. 【Height Adjustable】The posts can be adjusted in the height range of 3.5-8ft. 3.5ft (tennis net standard height), 5ft (badminton net standard height) and 6ft (volleyball net height). Suitable for people of all ages. 【Fastening system】Badminton net rack can use mechanical pulley fastening system to help you tighten the net and lock the position of the net. 【Antirust Steel Counterweight Box】Pour sand or water into the bottom to further stabilize the volleyball/badminton post against strong winds. 【Movable Volleyball/Badminton Poles】The wheels on the bottom make it easy to move the outdoor basketball hoop to your desired position for playing games with your friends, family and neighbors. For example, courtyards, gardens, lawns, beaches, etc.