Promaster Micro Four Thirds 接環後鏡頭蓋

The locking mechanism clicks firmly into place, giving me confidence it won't pop off in my camera bag. It fits both my Olympus and Panasonic lenses perfectly.

I've been swapping lenses a lot and this cap stays firmly attached without any wobble. the inner spring is just tight enough to hold securely but not difficult to remove.

Finally, a rear cap that actually clicks into place with a satisfying snap instead of wobbling around. It’s kept my lens rear element dust-free for weeks now, and the fit on the mount is precise every time.