Oster 76911-016 (911-01) size 0000 blade. Fits Oster Turbo 111 clippers and Oster Progienic Model 10 clipper. Cuts hair 1/100" (1/10 mm) close to shaving. For very close fades, also for the tops of flat tops over a comb. Also to remove a line of demarcation of a 000 blade.