No need for extra hardware. These punches raise a louvered shaped projection on metal edge for locking into rolled edge of sheet or piece to be joined. Metal pieces snap together and are fastened securely. Compound handle leverage for maximun ease of operation. Punch impression spaced 3/8" from the edge of the metal. Heavy forged cutting jaw. Rust resistant nickel plate and black oxide finishes. Ergonomic Redline handles with unique one-hand operation latch offer maximum compound leverage performance and natural fit and feel.
This product is priced and sold individually.
There are 4 crimpers in a full box.
