bridge for e-guitar roller bridge model, with studs, 14&;quot; radius, stringspacing 50,4mm, gold The roller parts will help keep your guitar in tune better when bending strings or using a vibrato system. The bridge can be locked to the posts for improved sustain. specifications bridge diameter anchor: 12mm length anchor: 19,5mm thread studs: M8 diameter studhole in bridge: 8x4mm spacing studs: 74,4mm stringspacing E-e: 50,4mm radius: 14&;quot; wire retainer: no saddles notched: n. a. finish: gold