12350100 Schaller Signum guitar bridge with locking studs 12350200 Schaller Signum guitar bridge with locking studs 12350400 Schaller Signum guitar bridge with locking studs 12350500 Schaller Signum guitar bridge with locking studs 12080100 Schaller STM guitar roller bridge (for tremolo use) 12080200 Schaller STM guitar roller bridge (for tremolo use) 12080400 Schaller STM guitar roller bridge (for tremolo use) 12080500 Schaller STM guitar roller bridge (for tremolo use) 12090100 Schaller GTM tune-o-matic guitar bridge 12090200 Schaller GTM tune-o-matic guitar bridge 12090400 Schaller GTM tune-o-matic guitar bridge 12090500 Schaller GTM tune-o-matic guitar bridge