Description

Kost Double Sharpener. But if you’re talking about a sharpener for nail tools, like a cuticle or nail pencil, a double sharpener could have two different slots designed for different types of nail pencils or tools that need a specific sharpening angle.

If you mean a nail file sharpener instead, that would be a tool used to restore the sharpness of a nail file that has become worn down over time. Some high-end nail files, like sapphire or glass files, can be sharpened to prolong their use.