Groom professional comb guides attachment combs glide through hair with very little effort and leaves a smoother finish than any other comb. The attachment combs are designed to work on all a5 type blades size 10, 15, 30. ·made from hardened stainless steel for durability, snug, secure fit. Snag free smooth tips. Color coding combs provides a quick visual reference, set in a strong storage case. 8 cutting lengths from 1 8 ‘ to 1’ 3mm 25mm cut. 1 8 3mm ideal for a close cut length, yet gentle on the pets skin. 1 4 6mm ideal cut length for a softer, more blended finish. Delivers a similar cut to a 5f blade 3 8 10mm ideal cut length for a softer, more blended finish. Delivers a similar cut to a 4f blade 1 2 13mm ideal cut length for a softer, more blended finish. Delivers a similar cut to a 3f blade 5 8 16mm ideal cut length when a longer coat is desired. Great for a body clipping, leaving a fuller length. 3 4 19mm ideal cut length when a longer puppy cut is desired. 7 8 22mm ideal when a longer, more natural cut length is desired on double and fluffy coats, 3 8 10mm ideal cut length for a softer, more blended finish. Delivers a similar cut to a 4f blade 1 25mm ideal cut length when a longer coat is desired. Perfect for double and fluffy coats leaving a longer natural finish.