The Rolls Royce of nail files. The finest lead crystal is carefully treated to create the perfect nail file. Leighton Denny’s CRYSTAL NAIL FILE simply turns the nail edge to dust. Traditional nail files can leave the nail edge rough or uneven but the CRYSTAL NAIL FILE smooths the nail completely, sealing it, leaving not a trace of a split or catch. The filing surface comes with a 25 guarantee. The unique surface seals ends of the nail & can be used back & forth unlike standard files.