note! , 13-17mm is different from other adapter rings. 13mm is internal teeth and 17mm is external teeth. You can change the 13mm lens to 17mm teeth, or change the 17mm clip or mobile phone case to 13mm interface; & nbsp;
This is different from other adapter rings~
![](https://img.alicdn.com/imgextra/i2/343260981/O1CN01ytusBy1J7L3GjuoNh_!!343260981.jpg)
![](https://img.alicdn.com/imgextra/i4/343260981/O1CN01LXO1b81J7L3BbgEH3_!!343260981.jpg)
![](https://img.alicdn.com/imgextra/i4/343260981/O1CN01wpaZWZ1J7L3GQrqV1_!!343260981.jpg)