Replacement Tone-Lock™ Bridge Lock Nuts, for 4mm bridge posts. For import guitars with native 4mm bridge posts, and Faber® 4mm conversion bridge posts (NSWKIT™, iNsert™, BSWKIT™, E-Sert™, ESWKIT™). Sold individually. MISC./SPARE PARTS, Tone-Lock™ Bridge Lock Nuts, Tone-Lock™ Bridge Lock Nuts for 4mm bridge posts (imports and Faber® 4mm conversion posts)#9205 Tone-Lock™ Bridge Lock Nut for 4mm Gloss Nickel $2.00 View Details MISC./SPARE PARTS, Tone-Lock™ Bridge Lock Nuts, Tone-Lock™ Bridge Lock Nuts for 4mm bridge posts (imports and Faber® 4mm conversion posts)#9206 Tone-Lock™ Bridge Lock Nut for 4mm Aged Nickel $2.00 View Details MISC./SPARE PARTS, Tone-Lock™ Bridge Lock Nuts, Tone-Lock™ Bridge Lock Nuts for 4mm bridge posts (imports and Faber® 4mm conversion posts)#9207 Tone-Lock™ Bridge Lock Nut for 4mm Gloss Gold $2.00 View Details MISC./SPARE PARTS, Tone-Lock™ Bridge Lock Nuts, Tone-Lock™ Bridge Lock Nuts for 4mm bridge posts (imports and Faber® 4mm conversion posts)Buy #9208 Faber Tone-Lock™ Nut Guitar for 4mm- Aged Gold $2.00 View Details