Product alright but without glue can not.

The disc is absolutely fine and the installation can be quite well do it yourself. But always carefully and with a lot of patience, especially the first time.
What was missing, however, are the key pads to also glue the disc again after having the old broken glass away.
Fortunately, I had very thin double-sided tape in the desk and the adhesive have myself zusammengeschnippelt, andenrfalls I had the iPhone disassembled on the table had and could not have done more.
So either adhesive pads also order now or see if you have thin double-sided tape and snip with some skill himself.
iPhone is back on for weeks and ideally I've saved a lot of money.