SureHook? features revolutionary built-in tension springs. Rods bend less and folders stay on rails and slide with ease. Rods and hooks are stronger and work with existing filing systems. Superior durability with reinforced polylaminated top and bottoms. Dispenser box for easy one at a time access. Includes clear tabs and letter size printer ready insert sheet. Contains 10% recycled fiber with 10% post consumer fiber. SFI Certified. Acid free. Lifetime Guarantee. Assorted includes Blue, Red, Yellow, Bright Green, Orange. 20/Box.