The AVT2P wraparound bridge assembly is matched with a wide cap set of SPRS2 locking studs. This set includes tone pros heighten & tighten adjustment tool for our patented locking studs. Our new AVT2 is currently the only locking, piezo loadable, standard saddle, fully intonatable wraparound bridge in the world. Fits USA guitars fitted with stud mount bridges with standard center stud spacing.