The opponent of ratchet crimping tools is made of special steel. The structure design meet human being engineering , when crimping cable lug, it can save 50% energy .The design of accurate crimping moulds and complete locking (self locking and releasing mechanic unit ) ensure high of crimping quality when crimping repeatedly. Accurate adjustment has been made before ex-works delivery. Due to perfect handle gripping position, light and logical structure and handle shape design matching human being engineering principle, it guar antae perfect crimping effect.