Floyd Rose Special Black R2 Nut While maintaining the original Floyd Rose design and functionality, this model uses zinc alloy saddles instead of steel, and a zinc alloy sustain block instead of brass. The design specifications and high-quality materials of the Special Series Floyd Rose bridge meet the demands of today's performers. The tremolo kit comes with various nut sizes to fit almost any electric guitar, and includes the bridge, springs and claw, mounting studs, and all the hardware needed for installation. This is an authentic product. Includes a separate R2 nut/black. ・FR-SPECIAL SERIES ・Nut width: R2 Approximately 41.5mm ・Sustain block: 37mm ・Color: Black ・Set contents: Tremolo unit / Locking nut / Studs / Springs / Arm, etc. *All parts necessary for installation are included. ・Shipping: Free nationwide