Heavy, pretty much bullet proof, good range of movements and takes everything from a 120mm to a 30" with the standard bellows. I like the fact that the lens board opening in the front standard is large enough to take a 210mm Super Angulon rear lens element without having remove it, insert it from the far end of the bellows and, then, thread it back into the shutter from inside the bellows. Specs are here:

http://www.toyoview.com/Products/810MII/810MII.html