伸缩夹，Scissor Snake Standard

The following improvements have been made to the original:

1. The original head has been redesigned as a longer, more imposing crocodile-mouth clip, making it easier to grasp objects.

2. The original design was prone to breakage at the hinge after printing. To address this, the hinge area now uses 100% infill, making it more robust.

The following improvements have been made to the original:

1. The original head has been changed to a longer and more domineering crocodile mouth clip, which makes it easier to grasp objects;

2. The original is easy to break at the hinge after printing, so it is changed to 100% filling at the hinge to make it not easy to break.