A Super Value for Super Savers If you are looking for a high quality 12-inch nylon zip ties set then look no more. Our 12 inch black heavy duty ties can rise up to any challenge. They are 120 pounds tensile strength and can withstand the most vigorous of circumstances. Use them for all your household needs. Buy them now! you have nothing to lose with our life time guarantee! If you are not satisfied, return anytime for a refund.