For Baby Use:
Yellow: Super Fine, fit for 0-3 months age baby.
Fluorescence Green: Fine, fit for 4-12 months age baby.
Mint Green: Rough, fit for over 12 months age baby.
Soft White Polishing Head: More Suitable for Baby Polish.
For Adult Use:
Metal Grinding Head: Shape and Shorten Nails.
Soft White Polishing Head: Smooth and Polish.
Cylindrical Grinding Head: Grind Nials Edge.