theyre adapters for ipod docks. they make it so you can fit an iphone/ipod touch/ipod mini/etc into any dock. what do you want them for? i know i have an 80gb 6th gen ipod one and an ipod touch one. maybe even an iphone 2g one but im not sure.
I want them so I can make some DIY docks using things such as a cassette tape, the iphone box, and a nes cartridge. If they actually turn out I will probably put some up in the FS for cheap. I just ordered 6 of them from ebay for $6 so I should have some to start with, but if I succeed in making them I would definitly like more.