Professional grade material - Using chrome vanadium (Cr-V) steel, with special overall heat treatment and high frequency quenching technology, the hardness reaches HRC61-63, making the shears more impact resistant, wear resistant and harder, which can improve cutting quality and tool life. No matter the type of metal, cut easily Labor-saving design - Through the lever pivots of the aviation shear, the hand force can be enlarged 7 times and converted efficiently in shear force with much less fatigue. Most materials can be easily cut, just like a hot knife through butter Impeccable detail parts - ergonomic handle is comfortable and stable to hold, has strong anti-slip performance; quick spring-assisted one-handed operation; serrated blade prevents the material from slipping during use, making the process safe and convenient; safety locks between handles to prevent damage to the cutting edge during storage; easy to hang tail hook to prevent falling when working at height Scope of application - Our aviation shears are ideal for use on sheet metal materials, square steel pipes, beads, bobbins, leather, rubber, plastic plates, vinyl coverings, cardboard, PVC pipes, etc. And are specially designed for cutting various metal sheets (aluminum, copper, wire mesh, barbed wire) Lifetime use - Our tin shears undergo a special heat treatment process that allows them to withstand the harsh conditions the most difficult, all designed to last.