10 Pcs Diamond Punching Needle Grinding Stone Carving Tools for Gemstones Jade Amber Jade Agate

Size parameters:

The handle diameter is 2.35mm.

Length: 42-50mm.

Grinding head diameters: 2.5mm,3mm,4mm,5mm, 6mm.

The electroplating process makes the engraving and grinding less prone to sand shedding and more 
durable.

Applicable to: carving, grinding and engraving on marble, granite, quartz stone, ceramics, etc.