Wahl Comb Set Stainless Steel 1-8 Stinger/Rapid Fire/Predator are stainless steel combs fit securely on the clipper. Designed to fit most competition series blades with a width of 49mm. Cutting lengths 3mm – 25mm. The recommended blades for use with these combs are: #8.5, #9, #10, #15 and #30