This is a terrific bridge- The nice vintage Correct vintage ABR-1 sized with narrow screw-in, bushing-less posts. This is the exact ABR-1 replacement- fully adjustable saddles, grooved at the factory, complete with the screw-in studs and adjusting wheels, 74mm post spacing and correct "bail Wire" for rattle free performance. On USA gibson? guitars you'll find the studs are just a tad larger in diameter than factory- but a very easy install.
Thread Height: 19.9 mm
Thread Pitch: M4 X 0.7