If you have a breed with a double coat, like a Golden Retriever, you need an undercoat rake. When you see those tufts of fine undercoat hair in your house, it's time to break out the Miller Forge Heavy Duty Undercoat Rake. Millers Forge is known for quality and these heavy duty undercoat rakes are built for years of use. The special tooth design glides through the coat easier than other types of undercoat rakes. If your dog has a thick coat, you need the 3/4 inch model.