Details: Handmade Solid Iron Rustic Clavos (Decorative Nails) 1.5" Diameter - Black and Sealed Finishes Can Be Used Outside - Finishes: Black, Rusted, Unfinished, Sealed Rusted, Sealed Unfinished Old World Accent for Barn Doors, Gates, Shutters, Furniture, Garages, Patios, Picture Frames Slight Variations - Every Clavo Has Unique Character Which Enhances Your Project Borderland Rustic Hardware makes highly-crafted, hand forged iron products for those who find the real value in the unique character found in each and every piece we make the old fashioned way. The hand forged iron clavos will accentuate the beauty and authenticity of your project or home decor. To install it is recommended to pre-drill pilot holes into the wood or metal and use a rubber mallet to lightly tap the clavos in. This will help prevent the finish and clavos from being damaged. The painted flat black finish is a baked on Acrylic Melamine paint which helps to prevent rust so the clavos can be used outside. The rusted finish clavos do have a slight powder residue that does slightly rub off when touched. They will continue to rust and darken in color over time and it is recommend that you use these clavos indoors or areas where they will not be handled often. The unfinished clavos will naturally oxidize if exposed to humidity and is recommended for interior use. The sealed rusted and unfinished clavos can be used outside as they have been coated with a sealer that helps to prevent rust.