Ancol Ergo Shedmaster Tool ANCOL ERGO GROOMING PRODUCTS All these products are made to a high quality and have comfortable handles/grips where applicable. Please take care when using any grooming / trimming accessory especially with the scissors and nail clippers. If you are unsure about the correct way to use these items please consult a competent person. Ergo Shedmaster Tool Medium / Large The Shedmaster is a brilliant tool designed to groom your dog with less fuss. The steel blade will trim and thin your dogs coat in a fraction of the time it would normally take. It uses the same process as the popular Furminator brand, another popular dog grooming tools.