NiSi M75 Protection Lens Cap

Finally, a lens cap that actually stays on when I toss the holder in my bag. The threading lines up perfectly with that 67mm adapter ring, so it’s on and off in seconds without any wobble.

Fits the 67mm adapter ring perfectly, so when the holder's off, my lens isn't just naked and collecting dust. Nice to have a solid cap that clicks on with a reassuring snap.

Finally, a cap that actually stays on my filter holder when I'm swapping lenses in a hurry—the screw-on design through the 67mm adapter ring is rock solid. It keeps the circular filter safe from scratches and dust during transport, which is exactly what I needed for my kit.