Used for a unique spiked embellishment on your custom projects * Screwback spikes come with screws for fastening onto clothing, bracelets, or anything * Claw spikes are commonly used for dog collars, Punk jacket, bracelets, Goth apparel, etc * Base Size (L x W): Approx. 11 x 10 mm; Height: Approx. 17 mm * Material: Aluminum