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.
Made of premium brass construction, anti-rust and stable.
It can firmly holds screwdriver, convenient and practical.
The size can be adjusted, suitable for many type of screwdrivers.
Please note that the screwdriver in the picture NOT included
Package includeds:
1* 3000 Grit Polishing Stone
1* Screwdriver Blade Sharpening Holder
If you have any questions, please feel free to contact us via ebay. We usually respond within 24 hours.