Wahl’s Stainless-Steel Attachment Guide Combs glide through all animal coat types with ease, giving you the longer cutting lengths needed to keep your pets looking their best. Stainless Steel bring quality and durability to your grooming experience. The attachment guide combs provide 8 additional cut lengths that let you keep up to 1 inch of hair. They are easy to attach to your Competition or Ultimate Competition blades and glide effortlessly through coats, leaving a smooth finish at the length you need. Each guide comb has smooth, rounded tips and will fit snug to the blade for safe, snag-free clipping. Do not use on #40 blade set of any brand.