Adjustable background stand An upgraded rotary locking design, which help you easily adjust the height and width of the backdrop stand. 4 Crossbars for Width adjustable (5ft-10ft / 61in-122in), and 3 sections of support rods for height adjustable (3.78ft-10ft / 45.3in-122in), which can meet your more needs when creating background. Strong background fixture -8 backdrop clamps +12 backdrop elastic string clip are the perfect partner of the backdrop stand, they can help you install the background cloth, balloons, colored flag, curtains, light strings and other decorations on the crossbar without moving easily. Flat & Heavy Base Each base 11.46lbs,made of high quality metal material, durable and solid. The base size 35*40cm is large and Flat contact area with ground also provide enough stability and safety. Stand Kits Package -2x Heavy Base,2xButterfly nut,4x gaskets,2x support stang,4x gaskets,4X Crossbar,2x water bag,8x backdrop clamps,12x backdrop elastic string clips,1x storage bag,1x carry bag.