The ABM 2400 Roller Tune-o-matic is a premium quality Nashville style bridge with roller saddles to keep the strings perfectly in tune after bending, especially useful with Bigsby style tremolo tailpieces. The roller saddles have a larger slot in the low EAD strings and a thinner slot in the high GBe strings for the correct support. The bridge is milled from a solid block of brass for superior quality and tone and the wider body gives extra intonation room over the older ABR-1 style. The bridge body has string notches along the back side to ensure the strings do not bind on the edge as they go to the tailpiece. Supplied with 5 mm Nashville style bridge posts and body anchors/bushings, the bridge body has elongated slots for the bridge posts to fit a wide range of different post spacings, once the bridge is mounted on the posts, screws at each end lock the bridge against the posts.