The 8 PACK 8 inch Galvanized L-Type Boat Trailer Bunk Brackets are designed for 3 x 3 Crossmember trailers. Made from high-quality galvanized steel, these strong and durable brackets come in a set of 8, including square U-bolts and hardware for easy installation. With 50,000 hours of long working life, these versatile brackets offer a universal fit and are a direct replacement for your boat trailer. Their sturdy construction, anti-corrosion finish, and heavy-duty design make them a reliable choice for your trailer needs.