Hyindoor 1 pair Grow Light Rope Hangers Heavy Duty Adjustable Reflector Gears (1/4") Rope Length -7.5Feet. A pair can handle 300-pounds. Rope Material - Braided Polypropylen. Hook Material - Zinc Plated Steel / Metal Internal Gears. Perfect for hanging reflectors, carbon filters, Inline fans, Duct Fans and more