Features: Perfect Lightweight Aluminum backdrop support stand kit is extremely suitable for amateurs to professionals from all levels of photographers. Easy to set up and store (Just needs a few seconds). The middle of the crossbar can be adjusted, can be directly adjusted without re-setting. Come with 6 Heavy Duty Spring Clamps 4.5 inches long 3/4"" x 5/8"" rugged, pivoting pads, Maximum Opening: 2 inch mouth Material: Nylon, 2 Heavy duty black sandbag Each sandbag rated for 20lbs Made from heavy duty nylon material. Installation instructions and safety instructions are included with the package