The same unique design and machining as the Trim-Lok tuners but in a bass model. The new Bass-Lok tuners eliminate the need for multiple wraps around the string post. Bass tuning keys come in only one size... 7/16". That is the size of hole you need in your headstock. The hole for the string will accept a .125 bass wire easily.

FYI: You absolutely need a lubricated nut with bass locking tuners. Sperzel locking tuners are sold individually to easily cover every configuration possible. Pick and choose below depending on how the headstock is set up. $18.00 each  Read more