Functions and features The innovative PET replaceable blade brush is newfashioned a de-shedding tool. It includes four different sizes stainless steel blade to fit all coat sizes. The 50mm ones are best for small sizes pets. The 66mm and 76mm ones are best for medium sizes pets. The 100mm ones are best for large sizes pets. It is the easiest, most effective way, to groom dogs and cats. Instructions Use after bathing when hair is dry Rake blade towards the clockwise gently before using the de-shedding tool Clean the blade thoroughly and store away for next use when it's dry Notice Do not use if your pet has an open wound Do not use excessive force when grooming Place the blade out of reach of children Spec: DQT100: 170*116*60mm 135G DQT076: 168*93*60MM 120G DQT066: 168*83*60MM 110G DQT050:168*74*60mm 100G