Wider open end design which allows the screw bolts and nuts can be fit easily.
Anti-slip design makes the clamping motion tighter when operating, which highly increases the safety of users.
A ratchet structure is designed in the open end of the wrench.
The ratchet makes the force that is applied on the contact area smaller, and decreases the opportunity of driving the bolts and nuts while using.
The design of ratchet can operate tighten and loosen motion to the bolts and nuts continuously, which is time and effort saving.
Rounded slide and arced grooves provide the convenience of cleaning. Furthermore, the impurities will not jammed easily.