The Beautytime BT186 Long Sapphire Nail File is a premium grooming tool crafted from stainless steel, featuring a dual coarse/fine sapphire coating for precise nail shaping. Its elongated design allows for efficient filing from the nail's edge to the center, ensuring a smooth and polished finish. Suitable for all nail types, this durable file is ideal for both home and professional use. For optimal results, always use on clean and dry nails.​