Genuine Floyd Rose German made 'R2' locking nutThis is an original Floyd Rose German made locking nut, manufactured from hardened steel.R2:Width: 1.625"/41.30 mmRadius: 10"/254 mmHeight at D: .230"/5.85 mmE-E Center width: 1.371"/34.80 mmString Spacing: .2502"/6.35 mmSeveral sizes are available, see..