I ordered this cap Nikon lens cap to replace the original that I lost very quickly. I lai received quickly and in a suitable packaging. Hat for the seller. This product perfectly fits the description and is fine on the objective of my D3100. The strap is very frankly, I say jaurais had me make alone or Nikon should have thought from the start. No concern for the thread. For cons, the only place is to attach the strap to the side and then you realize that this is a fair bit. This is perhaps not very attractive when this is so attached, but it's radical to not lose it.