Hand made original. The B12 model is very similar to the B7 but
with a slightly different look. Best suited for thin archtop
hollowbodies & solid body electrics. These units have the
roller retaining bar to give you the angle over the bridge that is
needed. Requires two holes to be drilled into the top of the guitar
& three on the bottom where the hinge attaches to the body. All
mounting hardware is included.
