Introductory 20 Diamond Bur Kit. Includes: Autoclavable Bur Block and 20 Diamond Burs: 801-012M, 801-018M, 801-023M, 830-016M, 805-014M, 859-016C, 859-016M, 859-016F, 859-016VF, 859-016UF, 868-018C, 868-018F, 856-016C, 856-016F, 881-016M, 837-014M, 827-014F, 847KR-016C, 847KR-016F. Bur block with 20 diamond burs