The present invention prevents the push bar that releases the tightening state by pressing the middle lever from slipping from the middle lever, thereby making it easy to fix and dismantle the fish farming machine, and to improve work productivity. It is about.;The present invention, the upper and lower clamps, and the upper and lower levers for opening and closing them, and the intermediate lever and the push rod and the like positioned between the upper and lower levers, the fixed plate is mounted on the front end of the upper and lower clamps In the pliers (pliers) used to secure a plurality of food machines to the rear, the intermediate side of the intermediate lever provides a pliers for the flatware is equipped with non-slip means for preventing the sliding of the push rod.;According to the present invention, by installing the slip prevention means at the rear center of the intermediate lever to prevent the push rod to release the tightening state by pressing the intermediate lever to slip off from the intermediate lever, fixing and dismantling of the flatware is made easily. This can improve work productivity. In addition, the pliers with worn hinge pins, which connect the push rods and intermediate levers to some degree, can be used for a long time without replacing them with new ones. Therefore, improved practical effect can be obtained to extend the service life of the pliers.
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