Longer-lasting material: Made of stainless steel which is smooth edges that have no burrs, durable to serve your guitar for a long term.
Precision Straight Edge specifically for checking neck straightness and relief, evaluating truss rod adjustments, and pinpointing high or low fret.
Fritz ruler: This guitar string action gauge can also measure the depth of saddle groove, fretting groove and nut height, and accurately measure other settings and adjustments.
Fret Rocker: 3.9*2.0*0.8” (100*50*2mm); 4 in 1 straightedge spans nearly three frets, which enable it to check any fretted instrument and indicate uneven fret heights, very convenient.
Nice gifts: This set of luthier tool is made for keeping your string instruments in almost the top playing condition, helping you to set up your instrument.