Aluminum Alloy MaterialL: This ring sizer is made of high quality aluminum alloy material.It is anti-rust,anti-corrosion,sturdy and durable. Made with advanced polishing process, the surface is smooth,will not hurt your fingers,comfortable to wear. .Detachable Design: All the ring sizers are connected by a wire rope,and the wire rope is detachable.Each ring sizer can be detached individually,for easy to use individaully.When they are connected together,they will not lose easily,and you can carry them conveniently. .Clear Engraving: Each ring sizer is clearly engraved with a size letter.The size letter is clear and easy to read, making it easy to use.Because the size letters are made by engraving process, it is not easy to fade and can be used for a long time. .Accurate Size: The size on the ring sizer is the standard UK A-Z size metal 26 Pieces, which is accurate.Using this ring sizer can help you quickly and accurately determine the ring size that suits you, avoiding the trouble caused by improper size. .With Plastic Ring Sizer Belt: The package comes with a plastic ring sizer. These 2 ring measurement tools are suitable for both men and women.You can use them to select the ring for your enaagament,wedding, annivesary or eternity. .