Benchmade uses six lobe, torx-like headed screws exclusively throughout the assembly of our knives. This engineered screw style offers a more "controllable" means of achieving tightness. Occasionally you may want to adjust blade tension, remove the carry-clip or simply tighten any loosened screws. So now we offer the The Bluebox for those purposes. Kit includes bit sizes- 6, 8 and 10. Two of each head bit are provided and the bit holder/extension is self-contained in a molded plastic case which doubles as the handle. Features removable plastic carry-clip on case.