The round holes on the side of the pomote surface firmly sharpen the toes, and use the hexagonal hole on the vine surface to lightly polish the claws to a natural luster. If the hex hole is too hard to shave, please finish it with the round hole. This product is amazingly sharpenable, so instead of sharpening it at once, please check the grinding condition and the light of the claws. When you press the file against the claws it will "convey", so it is easy to sharpen the claws at any angle. The main body is mesh-shaped, and the claws are see-through, making it easy to sharp. Fully washable. Easy to clean and hygienic to use. ★ Try cutting while slowly checking the condition of the claws with light force. ★The hexagonal hole is shaven from the round hole, so if you have a thin claw, please use only the round hole or use too much of the hexagonal hole.