The dog brush is made of stainless steel and plastic. Each needle is with safety white tip, which is more safe to use on pet skin, and these round tip also can provide a nice and gentle massage for your pet when you brush the hair for your loved pet. Just need simply push the blue button, and the beagle dog's hair will be released easily. It keeps your dog or cat's coat clean and healthy by removing dirt, debris. The handle is designed with anti-slip texture, more comfortable to grip and safer to use. Gently removes loose hair, and eliminates tangles, knots, dander and trapped dirt, without uncomfortable and painful pulling. Please keep away from children and animals when not using. You should not puppy brush too hard or it may hurt your pet. Please make sure there are no cuts or sores on your pet dog's body as this may also hurt when grooming over them.