The socket of a torsion wrench can only be used to tighten one type of bolt per model, for example, the 27 # socket can only tighten one type of bolt per m16. Regardless of the length of the bolt, it can be tightened, but other types of bolts cannot be tightened

所有每台扳手都可以换不同型号的套筒，用来拧不同型号的螺栓

All wrenches can be replaced with different types of sockets to tighten different types of bolts

扭剪扳手专用于扭剪螺栓的使用，一般钢结构工程中比较常用。

The shear wrench is specially used for shear bolts, which is commonly used in general steel Structural engineering.

钢结构工程中有大六角螺栓也有扭剪螺栓，大六角螺栓只能用定扭矩扳手，不能用扭剪扳手，而扭剪螺栓也只能用扭剪扳手来拧，不可以使用定扭矩扳手，两种螺栓造型不同，使用不同的扳手，所以一定要确定螺栓是什么类型的，根据螺栓来挑选适合的扳手。

There are both large hexagon bolts and shear bolts in the steel Structural engineering. Large hexagon bolts can only be tightened with a fixed torque wrench, not a shear wrench, while shear bolts can only be tightened with a shear wrench, not a fixed torque wrench. The two types of bolts have different shapes and use different wrenches, so it is necessary to determine what type of bolt is and select the appropriate wrench according to the bolt.