Large. The Rolls Royce of Nail Files 195mm Crystal File in a plastic wallet "CRYSTAL NAIL FILES are made from the finest lead crystal carefully treated to create a filing surface that gives perfect results" The finest lead crystal is carefully treated to create the perfect nail file. Leighton Denny's CRYSTAL NAIL FILES simply turn the nail edge to dust. Traditional nail files can leave the nail edge rough or uneven, but the CRYSTAL FILE smoothes the nail completely, sealing it, leaving not a trace of a split or catch. In Style Best BuyInStyle Magazine Winner BEST NAIL FILE. LIFETIME GUARANTEE The surface of the nail is hardened to provide a lifetime's usage. If the quality of the surface at any time diminshes in its efficacy, we will replace it free of charge. Please note this guarantee is invalidated if the file is damaged or abused. The guarantee does not cover accidental breakages or mishaps.