Quote Originally Posted by Colin Graham View Post
One of the 4x5 Polaroid conversions uses springs like this on the back, can't remember which..
Its from Alpenhause. I really like his back. It holds very well, it's compact, it's light, and it will hold very thick holders easily. If I ever get around to it I plan on mounting similar springs on a Bender wood kit camera. the Bender springs leave a lot to be desired.