The Schaller STM tune-o-matic bridge has roller saddles to keep the strings perfectly in tune after bending, especially useful with Bigsby style tremolo tailpieces. The saddles are individually intonatable and also adjustable for customer string spacing, simply rotate the roller saddle along the threaded support bar to set the position of the saddle. 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 whole bridge is constructed at a slight angle so that when the bass side of the bridge is angled back away from the nut (as standard on Gibson Les Paul and most tune-o-matic guitars for additional intonation room) the roller saddles are straight, pointing towards the nut, this ensures the strings glide over the roller saddles in a straight line and not at an angle. Supplied with 5 mm Nashville style bridge posts and body anchors/bushings as well as a pair of bridge posts with the larger 8 mm metric thread for screwing in to pre-installed body anchors on import guitars like ESP, Schecter etc. (8 mm bushings not included).