Irwin Aviation Snips have precision cold-formed blades. Cold-forming produces blades that can sustain greater pressure for cutting tougher materials and give increased life. The compound cutting action greatly reduces the force required to cut and decreases hand fatigue. The spring loaded jaws give you a consistent and smooth operation. Serrations on the lower blade prevent your workpiece slipping and provide a smoother, consistent cut. The safety latch is easy to reach from handle position with a simple push-up and release, and one-handed opening and closing. The handles have over-moulded soft grips giving you comfort and control.