These are the three steel clamping blocks that sit inside the Floyd Rose Original locking nut and grip the strings when you tighten the saddle screws. When one block strips, cracks, or goes missing, the nut cannot clamp evenly — one or two strings stay unlocked and the bridge does its job for nothing. This set of three replaces the full complement so all three string pairs lock at the same time.

Clamping blocks are specific to the nut they live in, and the nut itself has to match your neck. Floyd Rose sizes its locking nuts by width — R2, R3, R4 and so on — to fit the neck width at the nut slot and the fretboard radius of the guitar. A block from the wrong nut series may not seat flush in the channel. Before ordering replacements, pull the existing blocks and confirm they are from a Floyd Rose Original series nut. If you are also replacing the nut itself, measure the nut slot width on your neck rather than going by the guitar model — the same model has shipped with different nut sizes across production runs.

The blocks are steel with a black finish, matching the hardware on Original series locking nuts finished in black. Part number FRNCBBP.

If you are not certain which nut series is fitted to your guitar, send us the make, model and year and we will point you to the right part.