Zero Glide - ZS-3 Slotted Replacement Nut for Martin 3 Saddle but is impregnated with PTFE

but is impregnated with PTFE to improve the tuning performance of the guitar

the KickAss™ might seem like a simple

This is usually referred to as bowing or "bellying" of the soundboard - The JLD Bridge System has been designed to fix this problem

Charge iOS Devices via Optional Adapter (Not Included)

Zero Glide - ZS-3 Slotted Replacement Nut for Martin 3 Saddle but is impregnated with PTFEZero Glide ZS 3 Slotted Replacement Nut for Martin The Zero Glide Replacement Nut System borrows the "zero fret" concept to reduce string contact in the nut by up to 93%, increasing tuning stability, playability, and open string tone. It only takes a few minutes to install with absolutely no permanent alteration to your instrument. For Martin Style Guitar.