Home Slickdeals Harbor Freight Coupon: Select Items Under $10 (Online or In-Store) 30% Off... Slickdeals Harbor Freight Coupon: Select Items Under $10 (Online or In-Store) 30% Off (valid thru 03/19) By ARCOM - 18 March 2023 33 0 SHARE Facebook Twitter Go to the deal page: Harbor Freight Coupon: Select Items Under $10 (Online or In-Store) 30% Off (valid thru 03/19)