TPI-A-IGG Faber 5/16-24 Inch Tailpiece Inserts (pair) Steel, gold plated, glossy
TPI-A-IGG, 5/16-24 Inch Tailpiece Inserts (pair) German Carbon Steel, gold plated, gloss
inner thread: 5/16-24 Inch
outer diameter: 13mm
length: 22mm
(original '59 Gibson dimensions)