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

Size parameters:

The handle diameter is 3mm.

Length: 42-50mm.

Grinding head diameter: 3 mm, 4 mm, 5 mm, 6 mm, 8 mm, 10 mm.

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.