Harbor Freight offers coupons on a regular basis that can be used on top of their already low prices. Often times you will find multiple coupons for the same product at Harbor Freight. Can you stack these multiple coupons on a product at Harbor Freight? That depends on the terms and conditions of the coupon. If one of the coupons said that it cannot be combined with any other coupons or offers then unfortunately you cannot, but if neither coupon says they cannot be combined then you are able to stack them. You can find the latest and greatest Harbor Freight coupons by visiting our official Harbor Freight Coupons website.