New product
KASE Protection Lens Cap for K9 holder attaches to the magnetic adaptor ring and protects the front of the lens and CPL.
If you are walking from a location to another and you don’t want to remove the CPL and the adaptor ring, the KASE Protection Lens Cap is what you need to be sure that everything is well protected and mounted on the lens ready for the next shot.
The lens cap also allows you to leave the adaptor ring attached to the lens when you pack it away in your bag.