6,5 to 3,5 Good adaptor brand

I have Really nice German Zenheisser headphone, but they are 6,5  mm i have an adaptor but its very poor quality since i lost the ones that came with it. I need a nice adaptor but there needs to be a wire between the 6,5 adaptor and the 3,5 output jack since the weight of the adaptor can cause it to not work. And it would be a giant plus if they where sleeved. Can you help me?

you can buy the stuff you need to make 2 from radioshack for about $15 or if you just want to buy one, grado is the easiest to find and one of the cheaper adapters I've seen


Thank you