Fotodiox 相機機身與後鏡頭蓋套組（適用所有 M39/L39 螺紋接環相容相機與鏡頭）

The fit on these caps is incredibly precise—no wobble at all on my old Leica screw-mount gear. The rear cap's high-tolerance construction gives me real peace of mind when swapping lenses in the field.

Finally, a cap set that actually fits my vintage M39 lenses without any wobble or forced threading; the high-tolerance construction makes mounting and unmounting feel secure and smooth.

The machining tolerances are spot-on—my old screw mount lenses seat firmly without any wobble, which is exactly what I needed for protecting the rear elements during storage. The body cap also twists on smoothly, and for the price, this set handles like something twice as expensive.