Ebony flat burnishing stick with 4 varying groove sizes for leathers of different thickness. Multi purpose groove with pointed tip that can function as a folder. 

Dimension:  ~150mm, width of ~25mm, thickness of ~15mm

Smallest Groove ~3.5mm with depth 3mm

2nd Groove ~5mm with depth 3.5mm

3rd Groove ~7mm with depth 4mm

4th Groove ~10mm with depth 5.5mm