The Wahl 5in1 Coarse is an adjustable replacement blade for grooming dense, heavy or coarse animal coats with a compatible Wahl clipper. Its five settings—Sizes 9, 10, 15, 30 and 40—cover a manufacturer-specified range of 0.4–2.0 mm. The groomer can change the setting on the same blade as clipping, blending and finishing tasks change.

The blade snaps on and off, making it accessible for cleaning and replacement. It also works with Wahl's 5-in-1 stainless steel attachment guide combs when a longer finished length is required. Those combs are a separate accessory, so select them to suit the intended grooming result.

Wahl identifies uses ranging from detail work on dogs' feet and faces to body clipping on small and medium dogs. The manufacturer's guidance also includes cat grooming, horse bridle paths and fetlocks, and trimming for goats, pigs and cattle. Choose the blade setting for the area being worked on.

Part 2179-401 supplies one coarse 5-in-1 replacement blade. Check the clipper model against the compatibility list, inspect the cutting head before use, and follow the clipper manual when changing blades.