A of different nuts can be extracted with different screwsIt allows a steady, controlled pull to safely remove the various knobs and screws that we need to repair.A rubber cushion on the bottom of the clear tube helps to protect the finish of the guitar.The , or bridge and tailpiece screws can be removed without damaging the guitar.Suitable for pulling out the knobs of various guitar amps, effects, etc.Colour:BlackMaterial:Rubber + metalPackage Contents:1 set x Guitar knob extractorOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.