Faber® COMPATABLE METRIC INSERT-GOTOH 11/M8 , 8mm TailPiece inserts (pair)

Gotoh tailpiece inserts for M8 metric thread
11mm hole >  8mm Tailpiece Inserts (pair) 
diam. inside = 8mm
diam. outside = 11mm

Depth = 25mm
Open at the bottom end  too