Diamond Nail Stud Clavos 3" design in packs of 123" Diamond Decorative Clavos Nail Stud; Die Cast with black finish sold in packages of 12 for any wood garage door, gate, shed, or other solid wood application. These nail studs are designed for solid wood doors, gates, sheds, boards, or shutters. They are not designed for metal doors, as they are nail designed. Please check the surface you are applying to before ordering. They are available in five powder coded color finishes. A color ring featuring