The filed surface of the blade is carefully honed to ensure a smooth cutting process and reduce discomfort on children's teeth. Kit Contains: - 1 x 15/04. - 1 x 20/04. - 1 x 25/04. - 1 x 30/04. - 1 x 25/06. - 1 x 30/06. **For further product information, please contact Chat Support**