Milwaukee 48-22-4000 Multipurpose Forged Alloy Steel-Bladed Bulldog Serrated Aviation Snips w/ One-Handed Locking Mechanism ERGONOMIC HANDLES: These handles are coated in rubber and notched for comfortable finger placement. This lets you work longer and more effectively in a variety of work environments FORGED ALLOY STEEL BLADES offer maximum protection to your snippers. This lets you cut through a variety of materials, like aluminum, vinyl siding, copper, leather, cardboard, and screening CUT THROUGH STEEL with the serrated jaws. They are rated to tackle up to 16 gauge cold rolled steel and 18 gauge Stainless Steel RUST PROTECTION: These blades are coated with material that protects against corrosion. You can keep them stored among your other tools and used over long periods of time with minimal wear ONE-HANDED LOCKING MECHANISM: You can keep these secured when not in use with only one hand. This is imperative on dangerous job sites where you want to keep the risk of piercing yourself to a minimum