The Domino solid wood sipo tenons are designed to create a strong joint that will last a lifetime. Due to their shape and thickness, the durability and precision of these tenons cannot compare to traditional biscuits or dowels. Also, these tenons are made from African Mahogany, which makes them rot-resistant. When you want the job done right and the quality of a true craftsman, Domino tenons are a great choice. Sipo hardwood tenons are ideal for outdoor applications. If you are building for an indoor application, we recommend the beech hardwood tenons.