Main Features:

1)This lens mount adapter ring will enable you turn any lens into a macro lens and use on Pentax mount camera body. It will fit physically, automatic diaphragm, auto-focusing, or any other functions will not operate correctly while using this adapter. All automatic features such as focusing and aperture will have to be controlled manually. 
2)4 size clips(49mm-58mm) fit Pentax camera
3)Material:aluminium
4)Color:black
5)1pcs/high qualified pp bag
6)Packing:300pcs/ctn

We have below options available:
1,AD-01276 001  PK-49mm

2,AD-01276 002  PK-52mm

3,AD-01276 001  PK-55mm

4,AD-01276 001  PK-58mm