The Oster universal Comb allows you to cut hair to a specific uniform length, All comb sizes are designed to fit any Oster Clipper as well as most other clippers available, And they are easy to use - simply attach comb to the base of the blade pull up and secure into position, The Universal Comb is part of a complete line of quality Oster grooming products, Fits Oster A5 Turbo A5 Classic 76 Turbo 111 and many others, SKU: IMPR1063