From Wahl Professional’s line of products, our Premium Black Cutting Guides were designed for professional use with Wahl Professional full-sized clippers (excluding detachable blade clippers). These secure-fitting durable metal clips come in a range of sizes for precision fades and dependable lengths, including 1/8”, ¼”, 3/8”, ½”, 5/8”, ¾”, 7/8”, and 1”. With the exception of Wahl’s competition series blades (and detachable blades), our Premium Cutting Guides will fit all full-size clipper blades for maximum versatility. Package includes (8) Premium Black Cutting Guides (#3171-500) – 1/8”, ¼”, 3/8”, ½”, 5/8”, ¾”, 7/8”, and 1” and comb tray. Secure, smooth, and precise, the Premium Cutting Guides are a must have for every busy barber or stylist.