QVS Sapphire Nail File Large For well groomed and maintained nails our dual sided sapphire nail file is ideal. The large fine filing surfaces are made from tiny particles of synthetic sapphire that coat the blade for an ultra-smooth finish. The blade is made of hardened steel that is both flexible and durable. This nail file is very versatile and the ideal companion to have on you at all times. The file has been designed with an in-built cuticle pusher shaped into the handle. Our nail file also comes with a storage pouch.