IWISS MC4 Solar Connector Crimping Tools for AWG14-10 2.5/4/6mm2 Solar Panel PV Cable Hardened and durable steel construction for years of reliable services Easy to operate while using pliers, just insert the top into its position and press it High transmission of force to reduce the working fatigue according to lever control The design of accurate crimping molds and complete locking ensure high of crimping quality when crimping repeatedly Portable style with perfect handle gripping position, light weight, logical structure and perfect handle shape design matching human being engineering principle, it guarantees perfect crimping effect