From Wahl Professional's line of products, our Premium Black Cutting Guide was designed for professional use with Wahl Professional full-sized clippers (excluding detachable blade clippers). This secure-fitting durable metal clip come in a range of sizes for precision fades and dependable lengths. With the exception of Wahl's competition series blades (and detachable blades), our Premium Cutting Guide will fit all full-size clipper blades for maximum versatility. Secure, smooth, and precise, the Premium Cutting Guide is a must have for every busy barber or stylist. Wahl Premium Cutting Guide For precision fades and lengths Metal clip ensures comb' lasting fit to blade Glass and mineral filled plastic seamlessly glides through hair for smoother cutting experience Rounded comb teeth provide more pleasant cutting experience to clientele Fits all Wahl full size clipper blades except for Competition Series blades Options #1/2 - 1/16" 1.5 mm #1 - 1/8" 3 mm #1 1/2 - 3/16" 4.5 mm 8 pc set Comb tray #1 - 1/8" 3 mm #2 - 1/4" 6 mm #3 - 3/8" 10 mm #4 - 1/2" 13 mm #5 - 5/8" 16 mm #6 - 3/4" 19 mm #7 - 7/8" 22 mm #8 - 1" 25 mm