There are all individually wrapped, so that nothing can scratch or damage during transport.
Immediately after unpacking is recommended that all times together and apart screws because the threads from the anodizing partially exhibit a ridge, at the most competitive price but acceptable.
The procedure is also recommended to protect the manufactured mostly from Kunstsoff lens thread.
When attaching the lens empfahlt itself, as with any large fine pitch thread at the start in the wrong direction to turn up the first thread on spring and then gently screwed. This procedure is actually optimal in every thread.
Wanted to have only StepUp rings, but since this kit is cheaper than others with only one variety I've accessed.