Benchmade Blue Box Service Kit - It's a handy kit complete with all the right tools to help you keep your Benchamde knife tuned up for optimum performance. Benchmade uses "six-lobe" headed screws exclusively throughout the assembly of their knives. Occasionally you may want to adjust blade tension, remove the pocket clip or simply check for any loosened screws, so Benchmade offers a handy kit for those purposes.Various bit sizes with a Bit holder/ extension; molded plastic case which doubles as the handle/ Bit Sizes. Various Bit Sizes: (2) T-10, (1) T-8, (2) T-6, & (1) R-0 Bit Holder/ Extension