Convenient spring-loaded rod stopper.

Since there is a cut, installation and replacement is one-touch.
There is no need to pass it from the tip of the rod.
After use, it will return to its original shape due to the shape memory material. (PAT.P)
You can also prevent shizuku by turning the crack upward.
If the spring becomes weak, you can twist it inward alternately to make it stronger again.

Corresponding 尺 : 12尺 ~ 15尺