TOWNER Hinge Plate Adaptors are designed to accommodate the guitar players access to the strap button and strap lock buttons lifting them above the slot in BIGSBY B3 and BIGSBY B7 hinge plates for easier access. And to relieve the guitar owner from having to drill the four extra holes through the hinge plate into the guitar body.
Also, some strap buttons and strap lock buttons do not fit between the slot of the BIGSBY B3 and BIGSBY B7 hinge plates. TOWNER Hinge Plate Adaptors make it possible to use ANY strap button or strap lock button with BIGSBY B3 and BIGSBY B7 vibrato tailpieces.