Check the listing for details. Genuine Floyd Rose 1000, Special Series Locking Nut R3 Chrome. Color: Chrome, Condition: New. Listed at 26.00 USD. Floyd Rose 1000, Special Series Locking Nut R3 Chrome Manufacturers Part Number: AP-FR1NR3C Authentic locking nut for Korean-made 1000 Series, 1000 series Pro, and Special Tremolo Systems. If you don't know the nut size you need, please consult the nut sizing chart below: R2: Width 1.625"(41.30 mm) Radius 10" (254mm) Height 0.2303" (5.85mm) E-E Center width 1.370" (34.80mm) String Spacing .25" (6.35mm) Bullet recess - no R3: Width 1.6875"(42.85 mm) Radius 12" (304.8mm) Height 0.2795" (7.10mm) E-E Center width 1.4153" (35.95mm) String Spacing .2598" (6.60mm) Bullet recess - no Buy with confidence from SportHiTech, an authorized Floyd Rose Dealer. All products carry full factory warranty and ship in original retail packaging.