3000 Grits Polishing Stone with Steel Holder for Sharpening Watch Repair Screwdriver Blade W2732

3000 Grits Polishing Stone with Steel Holder for Sharpening Watch Repair Screwdriver Blade W2732

Applicable to hardened chilled steel, alloy steel, precision steel, glass, porcelain and quartz etc.

The Ruby Sharpening stone is made from sintered crystals of synthetic ruby;

It is extremely hard, maintain their shape well and are resistant to wear;

Specification：3000 grits

Please note that the screwdriver in the picture NOT included

Package included：1 set