Coastal Pet Safari dog diamond nail filed regularly, especially after a nail trimming. Made of stainless steel. Properly trimming and filing nails is important to dog's comfort and health. 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 pet's nails smooth and healthy.