Danish L-Shaped Nails: HH Perkins only sells authentic Danish L-shaped nails from Denmark. Danish Nails are a must-have for seat weaving. They pair with Unlaced Danish Cord and Laced Danish Cord. Danish Cord is a very popular weaving material. Danish Nails are 90 degrees, making a perfect right angle. Although Danish Nails are primarily for seat weaving they can be used anywhere. These L Nails are very popular in photography and photo hanging, crafts, and DIY installations.