This is a wood edge slicker/polisher/burnisher. What's different is you can install it on an electric grinder, it was made for liberate your hands!
There are 8 sizes: 11mm, 10mm, 8mm, 5mm, 4mm, 3mm, taper(bottom diameter is 16mm), and cylinder(diameter is 18mm).
It was made made by African blackwood or Rosewood, with careful polishment, you can see from pictures, very smooth, the connecting rod is 304 stainless steel screw, the rod diameter is 3mm. So it was use on small electric grinder which can hole 3mm rod.
This high quality tool is an excellent addition to your leather workshop.
1. DON'T polish the leather edge without beewax!!! You MUST use beewax to polish the edge!!!
2. DON'T use high speed, middle and low speed is acceptable!!!