Coastal's Safari Dog Diamond Nail File is specially contoured to conform to the shape of your dog's nails. Easy to use, the diamond finish ensures a smooth nail. Holding the toe firmly, file in a smooth stroke on the tip of the nail. File from the back to the tip, following the contour of the nail. Do not file in the opposite direction. A few strokes on each side of the nail will remove burs and leave your dog's nails smooth and healthy. Properly trimming and filing nails is important to your dog's comfort and health. Nails should be filed regularly, especially after a nail trimming.