The B+W Snap-On Lens Cap #310 model has two spring-mounted claws at opposite sides which attach to the inside of the filter or lens threads. They work on any lens or front-threaded filter with the filter size that matches the size you see here ( 46mm in this case ). If you have a filter on your lens which has no front threads, you would instead need a B+W #305 model cap.
| Packaging Info |
| Package Weight | 0.3 lb |
| Box Dimensions (LxWxH) | 3.9 x 3.5 x 0.3" |
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