The N2R notcher punches a big 1 inch (25.4 mm) deep inVin notch in common 24 to 30 (0.71-0.41 mm) gauge galvanized sheet metal quickly and easily. Folding and fabricating metal ductwork is easier than ever with the full 1 inch clearance that the N2R single operation notcher provides. Precision-ground steel upper jaw and hardened stampened steel components feature rust-resistant black oxide and nickel plated finishes. Ergonomic Redline handles with unique one-hand operation latch offer maximum compound leverage performance and natural fit and feel.