Description
This product has the following features：
1、It can be rotated freely in 360 degrees
2、It has degree marks
3、It has three locking screws which ensures correct focal plane
4、The locking screws are used only to fix the angle and ensure the focal plane. Even if the three screws are completely loosened, they will not cause the parts to fall off
5、It is compatible with 21mm-long M42-M42 extender and has M42x0.75 male thread and M42x0.75 female thread.
6、There is a damping effect between parts, so it has a comfortable feel when rotating
