Feature: 1. Not easy to rust or corrosion, designed with two metal bearings, save time and effort. 2. Auxiliary grinding screwdriver tools, long service life and convenient for repairing. 3. Suitable for fixing the screwdriver in the grinding process, which is an essential tool in repair. 4. Make screwdriver more quickly to be maintained, suitable for watch screwdriver repairing and saving time. 5. Perfect for amateurs, watchmakers and clock repair shops, compact and portable. Specification: Item Type: Screwdriver Sharpening Guide Material: Iron Mainly used for grinding watch screwdrivers Usage: When the screwdriver is put into the sharpening guide for grinding, the screwdriver should be kept in a horizontal position on the sharpening guide before grinding. Package List: 1 x Screwdriver Sharpening Guide