Silver-plated base metal Scrimp kit by Beadalon®. Contains one screwdriver, ten bullet-shaped scrimps and six extra scrimp screws. Scrimps have a 3.6mm outer diameter and 1.04mm inner diameter. Silver plate is a thin surface layer of actual silver. Screw-crimp findings have a tiny screw inside to hold the stringing cable in place. These work with up to 0.018 diameter Beadalon.