The Acousta Peg Locking Bridge System for six or 12 string string guitars, improves tone, sustain, playability, intonation, frequency response and voicing and provides a severe reduction in forward bridge leveraging. The locking bridge system is totally unique because the pegs can be pushed in or taken out easily with no force needed, and once in, the pegs stay and do not move in the bridge. These pegs never fail unlike cheaper plastic models which split easily needing replacement or like other metal pins which do not lock. Higher priced but they will never fail or need to be replaced. I nvest only once for the lifetime of the guitar. Can be ordered in cold rolled steel and soon in hickory wood. 12 string guitars systems are special order.