Ergonomic handle design, length 6, bristle diameter 0.57 Best for Puppy, Yorkie, chihuahuas, small dog and cat Its wrong to use finger brushes, vet advise 360-Degree Pet Toothbrush which is the best brush to rotate the brush get more brushing done Toothbrush has super soft bristles, 10 times more bristles to remove plaque, food particles and effectively cleanse and massage tongues, teeth and gums Notice: Clean and dry after use. When not in use, put the toothbrush out of the reach of pets to prevent them from biting