These Kett pneumatic scissor shears are similar to the P-580 scissor shears. The P-570 features a stationary top blade. They are ideal for cutting a wide range of pliable materials such as: carpet,carpet underlayment, foam rubber, linoleum, vinyl, woven wood fabric, chip board, etc. The unique scissors action cuts light materials without fouling or gouging. Even handles heavy foil, light insulated wire, hardware cloth and mesh screening with ease. The large "Rabbit Ear" blades funnel thick, soft materials into the scissor jaws for a clean, flowing cut. This time and labor saving cutting shear weighs less than five pounds. The cutting blades are the finest A-2 tool steel, and can easily be replaced.