Finally! I've ordered this adapter about a month ago! Damn you, Israel post.
A few posts ago I uploaded pictures taken with reverse lens.
To take those pictures, you have to be very stady, because the lens isn't connected to the camera's body.
You can see every little movement, and it might ruin the shot (and that's what actually happen most of the time).
The results of this are amazing macro shots (you can take a look at those posts - Reverse (1) & Reverse (2).
I really wanted to find a way to make sure those reverse lens shots will be amazing, and I found this amazing solution! Reverse lens adapter!
It's actually a metal ring which I ordered from eBay, that way you can put the ring on the reverse lens and connect it to the camera's body, which makes taking the pictures so easy.
You have to look about your lens mm so you can buy the right ring, there's many sizes, make sure you buy the right one. For an example - I got the canon 50mm f/1.8 lens, and I had to buy the 49mm ring.
Can't wait to try it!