Grindstone Whetstone Ruby Polishing Stone 3000 Grits 

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

Size: L150*H20*D5mm

Package included：1 piece*  Ruby Polishing Stone