Hand made original "Kalamazoo Line". The B3 unit works best on thin hollowbody archtops such as Guild Starfire III's, Gretsch 6120 Nashville's & others that use a floating style bridge. It can also be used on some solid body archtops that use the same style bridge such as a Gretsch 6129T Silver Jet. The only holes that need be drilled are the four at the bottom of the guitar where the hinge attaches to the body. Bridge not included. Overall length 7 and 5/8 inches / 120.7mm, overall width 3 and 5/8 inches / 92.1mm.
