The H7 is made from tungsten carbide, which is three times stronger than steel. Its hardness makes it ideal for cutting work and allows it to maintain a sharp cutting edge that can be used multiple times without becoming dull.
It is available in friction grip, right angle and friction grip short shanks and available in the following sizes:
- 006 (329)
- 008 (330)
- 009
- 010 (331)
- 012 (332)
- 014 (333)
- 018
Learn how to use a 330 bur here:
https://www.kometusa.com/Blog/Oct-2021/How-to-Use-a-330-Dental-Bur