This article is a 40mm filter, an LH-JX10 filter adapter and one 40mm and 52mm cover. The 40 filters can remain permanently on the camera. The original cover fits just like the supplied one. I do not have, but the Kara also fits into one of the pockets for X10 because the filter only a few millimeters applying.
Now I can use with UV Televerter and has only once screws. The second LH-JX10 I still free for other 52er filter.
The 40 filter protects übrigends not only the lens, but also the thread of the X10 lens. Better a broken thread on the filter than on the camera.
Quite clear Kaufempfelung !! Actually, something should be accompanied by all the cameras of the X series.