This is a premium quality cream or ivory coloured real carved cattle bone nut suitable to upgrade the standard plastic part on any Fender Jazz Bass or other bass guitar with a 38mm (1 1/2" neck) nut standing 5mm to 6mm high and 3.5mm thick with a slightly angled top and a flat bottom.This hard wearing carved and pre-grooved bone nut provides superb acoustic coupling between the strings and body of your guitar, for a tight, crisp sound.