Promaster 6807 後鏡頭蓋 - L接環 (Panasonic、Leica、Sigma)

Snaps onto my 85mm perfectly—no wobble, no hesitation. The inner grip ring is tight enough that I'm not worried about it popping off in my bag. Exactly what I needed for keeping dust off the mount.

Finally grabbed one of these for my 35mm and the fit is snug, zero wobble when it clicks into place. It’s cheap insurance against dust on the rear element, and the plastic feels solid enough for tossing in a bag without worry.

Popped this onto my 50mm f/1.4 L-mount lens as soon as it arrived—the fit is perfectly snug without being hard to twist off. It’s nice having that layer of security against dust in my bag.