The present invention is characterized in that a first cylinder having a relatively small diameter and a second cylinder having a relatively large diameter are formed inside the cylinder so that a step is formed between the first cylinder and the second cylinder, A cylindrical cylinder body having a V-shaped annular groove supporting groove formed to face the V-shaped annular groove supporting groove, and a pair of lever opening and closing operation triangular protrusions corresponding to the V-shaped annular groove supporting groove, A first bar having a relatively small diameter and a second bar having a relatively large diameter are integrally formed to form a step at the tip of the second bar, and a pair of U- An operation arm in which the operation chambers are crossed with each other； A pair of hook-and-row hanger levers which are inserted into (coupled to) the U-shaped hook-and-loop fastening grooves of the first arm so as to be restrained by the fastening shaft pins on the first bar and whose connecting hook- A coil spring inserted into the first bar of the operation arm and detached by the step of the cylinder and the step of the operation arm to elastically move the operation arm forward and backward； The operation arm is divided into a main operation arm and a auxiliary operation arm formed with a pneumatic rope mounting hole formed so that the lever operation chamber and the V-shaped cramp support groove are opposed to each other, and the main operation arm and the auxiliary operation arm can be detached ； Wherein the auxiliary operation arm is detachably attached to the inner surface of the rear end of the main operation arm by a detachable means； Wherein the main operating arm has a guide curved groove formed on an inner surface of an opposite quadrant of the tip end divided by a lever operating chamber and forms a front end shaft seal chamber on the inner surface of the lever operating chamber facing the lever； The hooking-dividing hooking lever has
