Wood knob,Bell Shape,Rosewood wood,Push on style Knob.It fits both metric and inch split shaft pot.
Available shaft : 18 spline knurling and 24 spline knurling
Overall height : 12.9 mm
Outside dia : 25 mm
If your guitar pot shaft is split,you can use this knob,because this knob will fit both metric 18 knurling spline and inch 24 knurling spline.
The below photo to show what is the knurling spline shaft pot.