These are designed to be used to slightly widen your existing nut slots if you are encountering binding in the nut (that ping sound you get when tuning) or if you want to move to a thicker gauge string.
Ktaxon 4 String Bass Guitar, Bass Kit Full Size Guitar Starter Kit with 20W AMP, Portable Gip Bag, Premium Cable, Adjustable Guitar Strap, Picks and Wrench, Gift For Music Lover(Bass Set-Sunset)
MAX GigKit Full‑Size White Electric Bass Guitar Starter Pack - 4‑String Bass Guitar with 15-40 W Amp, Gig Bag, Strap, Cable, Picks & Extras – Ideal Beginner Student Kit with 6 months Lessons
Ktaxon Electric Bass Guitar 4 String Bass Guitar with 20 Watt Amplifier, PJ Type Pickup, Naturally air-dried Maple Neck, Rosewood Fretboard, Basswood Body(Red)
1 Set Bass Humbucker Pickup for 4 String Bass Guitar Parts Pro Electric Bass
40mm BONE NUT Flat Base + pre-cut string slots for 2 a side 4 STRING BASS guitar
Warman MM4 4 string bass guitar humbucker pickup. 12.86k 4 wire overwound
