Schaller Non-Tremolo Roller Bridge Chrome A highly adjustable non-trem Strat inspired bridge that doesn't require through body stringing or string grommets.Low-friction roller saddles adjust for intonation and height, and for string spacings from 2" to 2-3/16" (50.80mm to 55.56mm). The strings mount at the rear of the bridge. Screws included. The saddles and the 2-13/16" x 1-15/16" (71.44mm x 49.21mm) baseplate are brass. A removable 1/8" (3.00mm) spacer is included for raising the baseplate height if needed. Use a .050" allen wrench to adjust the saddle heights from 3/8" to 17/32" (9.53mm to 13.49mm) from the guitar body (E string positions).Positioning the bridgeFind bridge placement for any scale with our free online tool  fret position calculator.