Original, made-in-USA, sand-casted Bigsby B12. The B12 model is very similar to the B7 but with a slightly different look. Best suited for large acoustic and arch-top guitars. These vibratos have a roller retaining bar to give you an angle over the bridge if necessary.
Requires two holes to be drilled into the top of the guitar & three on the bottom where the hinge attaches to the body.
Spring, washer, and mounting hardware included.