手拉葫芦型卸扣钳

手拉葫芦型（省时省力）卸扣钳适用于76钻杆一89钻杆（适用于扭矩较大，岩石钻具）。

Break out tong chain type (save time and effort) shackle pliers are suitable for 76 drill pipe to 89 drill pipe (suitable for high torque, rock drill pipe).