[GER] opto-endstops for sale

I'm having a few opto-endstops lying around and I don't need them. I've tested all and they work fine. 3 of them have a 60 cm cable but the other 4 have shorter cables between 34 and 20 cm. It is possible to solder longer cables directly to the endstops and maybe it's possible to put longer ones at the connectors. The only problem with these endstops is that they have no hole for mounting, but hot glue should work fine. A picture of them is in the attachment.