MultiplePRO SuperTuff 24-Pc Bungee Cord Set - 6 Assorted Sizes Double-end hooks have 3.5mm steel core & plastic coating so it wont scratch delicate surfaces Our quality tie-downs are made of heavy-duty, odor-free, latex & rubber, double-braided cording Cording is completely sealed inside the plastic-covered hook to keep the tie down from fraying Super-stretchy material expands to 50% of its length making these ideal for a variety of jobs Our kit comes in assorted sizes (see below) with elastic straps rated up to 132 lb. tensile strength