The Crescent Wiss® MetalMaster® Left and Straight Cut Aviation Snips are capable of cutting left arcs and straight lines. The CNC-serrated blades tightly hold and aggressively cut material, while the self-opening spring action delivers a smooth, low-effort feed. Non-slip cushion grips provide superior control, and tough molybdenum steel blades have exceptional durability and long blade life. Cuts up to 18-gauge carbon steel.