For use on ribbon, trim, lace, leather or any other material less than 3mm thick. Great for making ribbon chokers, ribbon bracelets and ribbon bookmarks. 16 pieces - 50mm or 2 inches long - about 8mm wide - about 5mm high - about 2mm loop. Very easy to use. Just seat your ribbon all the way back in the ribbon clamp and then close it down with pliers so that the teeth get a good grab on your ribbon. Other sizes and finishes are available.