duct is easy to use. The product is highly durable and handle. The product is manufactured in china.From the ManufacturerDesigned to provide a positive connection between a 6x beam and a 6-inch by 6-inch post, these connectors are always installed in pairs. Stronger than angled nailing or screw fastening. Design eliminates nailing into end grains. The product is easy to use | The product is highly durable and handle | The product is manufactured in China