Keeper EPDM Rubber Straps These straps wont crack, rot, or lose rebound qualities with repeated use. Features quality rubber that remains non-brittle in temperatures as low as -40 F, high temperature or demanding elements to be used year-round. Zinc-plated, steel hooks resist corrosion and won't bend, break, or rust as easily. For indoor and outdoor use. All rubber straps are measured from hook to hook Pack of 10