ABM 2500n Bridge, Nashville TOM-style Electric Guitar Bridge, The riders come unnotched so the strings course can be perfectly adapted to the instrument, String spacing: 52 mm, Pin spacing: 74 mm, Radius: 305 mm (12""), Material: Solid brass bells, Surface: Nickel@+*Package contents:*@+@+, Bolt 4 mm to M5, M5 in sleeves (Nashville), Replacement rider, Replacement circlip, Replacement screw, Allen key