●Carriage Bolt Kit: Includes 12 carriage bolts, 12 USS thick washers, 12 hex nuts ●Carriage bolts kit are designed to fasten a wood member to either wood and metal. ●Made of high-quality materials, durable and corrosion resistant. Suitable for outdoor use. ●Carriage Bolt Kit perfect for decks, pergolas, gazebos and heavy duty applications. 1/2"-13 diameter. ●If our Carriage Bolt Kit has any quality issues, please do not hesitate to contact us.