Wahl Double Row Rake & Shedding Blade with Orange Gel Handle. The Wahl Double Row Rake and Shedding Blade is a 2in1 grooming tool that removes loose hair from your dog’s undercoat and top coat. Groom your pet in comfort with the Wahl Double Row Rake and Shedding Blade. Dual head system removes loose hair from the coat and undercoat. The double row rake gently removes loose undercoat with a shedding blade designed to effectively remove loose hair from the top coat. Suitable for long haired breeds or those with a texture of coat prone to matting (e.g. Bearded Collies, Lhasa Apsos and long-haired Yorkshire Terriers) will need daily brushing to keep their coat healthy.