Tuning peg drill bit for fast stringing and unstringing of you guitars. Should fit most standard size tuning pegs as is. Hole dimensions are .31x.9 in so if your tuning pegs are of an odd size, just scale appropriately.

Print Instructions: PLA I would print hole side down. Make sure to select bed support and only with angles over 60 degrees. I did 20% triangular infill.

note: It's good practice to not have any torque applied on the axis the layer lines are facing, but if you're creating any torques with this bit that would break at 20% infill, you're using it wrong. Better the print breaks than your tuning peg.