30x10Ft heavy duty triple-wide crossbar background support system is Perfect for photo/video studio shooting, home, outdoors and weddings etc on-site. Perfectly use for muslin, green screen, canvas, or paper backdrops, aluminum alloy construction for supporting the backdrop ?2?x Spring Cushion Support Stand Diameter 1.4 inch diameter tube Single Action Lock 100% Aluminum construction Max Height: 10ft Min Height: 3.9ft The stand come with safe lock knobs and spring cushioned for safety use ?2?x Heavy Duty Light Stand with Universal Head The middle stand with universal head allows this kit to right angle and horizontal Diameter 1.4 inch diameter tube ?3?x Heavy Duty Telescopic Crossbar Aluminum alloy construction Each Telescopic Crossbar Length:10ft(4 pcs crossbars) Max length: 30ft (12pcs crossbars) Connected by a crossbar connector, the combined maximum width reach 30 ft Holds Canvas, Muslin or Paper Backdrop and other backdrops you need Max load capacity: 40 lbs ?2?x Angle Adjustable Crossbar Connector precisely designed for maximum rotation degree. Background screens adjusted at various angles for your needs ?12?x 4.5 inch Photography Muslin Backdrop Clamps Holds seamless paper, canvas, muslin and other backdrops you need. Light weight and strong pinch. 4.5 inches long Maximum Opening: 2.1 inch mouth Material: Nylon Maximum opening 2.1 inch fit onto most backdrop stand, background,photo studio ?4? x Sand Bags Made from nylon material Extra stability sand bags ensure a strong hold for those extra heavy backdrops. ?1?x Portable Carry Bag Premium quality nylon material with sturdy zipper everything disassembles back into the bag, easy to store or travel with. Package Includes: (2) x Spring Cushion Support Stand (2)x Heavy Duty Light Stand with Universal Head (3) x Heavy Duty Telescopic Crossbar (12)x 4.5 inch Photography Muslin Backdrop Clamps (4)x Sand Bags 1 x Portable Heavy Duty Carry Bag Installation instructions and safety instructions are included with the package