棘轮扳手是一种手动螺丝松紧工具，单头、双头多规格活动柄棘轮梅花扳手。
棘轮扳手是修理汽车的工具方便拆卸螺丝螺母用的它比以前的单个扳手实用率，它的使用方法是，棘轮扳手头部有按钮按下按钮套筒直接脱落这个是锁止套筒的，按钮下面有左右可以搬动的拨头，往左拨动是紧螺丝，往右是松螺丝。
是由不同规格尺寸的主梅花套和从梅花套通过铰接键的阴键和阳键咬合的方式连接的。 由于一个梅花套具有两个规格的梅花形通孔，使它可以用于两种规格螺丝的松紧。
气动棘轮扳手的正反转开关一般在头部，是两种常规的正反转开关，一种可直接旋转开关控制正反转，另一种是借助六角扳手拧松再转动。
Ratchet wrench is a manual screw tightening tool, which is a single head, double head and multi specification ratchet box wrench with movable handle.
Ratchet wrench is a tool for repairing cars. It is convenient to disassemble screws and nuts. It is more practical than the previous single wrench. Its use method is that there is a button on the head of ratchet wrench. Press the button sleeve to directly fall off. This is the locking sleeve. There are left and right movable pullers under the button. Moving to the left is to tighten the screw and to the right is to loosen the screw.
The utility model is connected by the main plum blossom sleeve and the slave plum blossom sleeve with different specifications and sizes through the engagement of the female key and the male key of the articulated key. Because a plum blossom sleeve has plum blossom shaped through holes of two specifications, it can be used for the tightness of screws of two specifications.
The forward and reverse switch of pneumatic ratchet wrench is generally at the head. It is two conventional forward and reverse switches. One can directly rotate the switch to control the forward and reverse, and the other can loosen and rotate with the help of hexagonal wrench.
