OZCO Ornamental Wood Ties (OWT) 4-inch Laredo Sunset Rafter Clips are so useful they fit nearly every project and every plan. OWT is designed for use with pressure treated lumber and are engineered to make installation faster and easier. All products in the OWT line are constructed for indoor and outdoor use and can stand up to summer's harshest conditions; sun, wind, and rain are no match for the ultra-heavy gauge steel and corrosion protection.