The 5 Silicone brushes are much easier on dogs gums than regular bristle brushes and we included 2 soft bristle brushes for the difficult to clean teeth. Perfect sized brushes to allow for easier cleaning around and behind the dogs teeth and not just in front of the dogs teeth like other larger sized toothbrushes. These toothbrushes work great for puppy, small, medium and large sized breed dogs. The silicone on the brushes have been designed to not come off easily from the handle unlike other silicone brushes. If your dog never let you clean their teeth before they will now with these soft and durable toothbrushes.