Buy with confidence. If you are not completely satisfied, return the item(s) within 30 days to receive a prompt refund. Returns after 30 days are subject to a 10% restocking fee. Wolff Industries, Inc. reserves the right to make changes or improvements on its products without incurring an additional obligation to make corresponding changes or improvements to products previously manufactured or sold. Wolff Industries, Inc. reserves the right to discontinue products at any time without notice.