"Designed for heavy-duty use. Made of strong, tough, tempered steel. Nickel-plated finish. Scraper and file on outside of both blades. Rounded points. Screw-hinge permits adjustments. The lower blade is serrated to minimize slippage of wire when cutting. Upper blade has notches for stripping 19 and 23 gauge wire. "... Click here for more info on Electricians Scissors.