BOTAO STRONG AND DURABLE: All 6 collar reinforcements are made of stainless steel. They are magnetic, do not bend or break easily, are very strong, durable and can be reused for a long time. SMOOTH EDGE: These are sturdy metal collar stays that wont warp, keeping your collar stiff and keeping your shirt looking crisp and clean all day. The collar stays also have smooth edges that wont grind a hole in your collar. 3 SIZES AVAILABLE: The metal collar holder is available in 3 length sizes to suit different needs - you can use the right one to fit different shirts. 6 magnets can hold the metal collar firmly. GREAT GIFT: Shirt collars are a must for everyday life. The luxurious gift box makes it the perfect gift for fathers, husbands and boyfriends on Birthdays, Thanksgiving, Fathers Day, Valentines Day, Christmas and more. Rust-resistant heavy duty neckline wont rust, which means no stains will be left on the shirt. It is absolutely safe to use on white shirts. Quantity delivered: 1 set (3 pairs) Dimensions: 56x10x0.8mm/63x10x0.8mm/70x10x0.8mm Color: silver Kind tips: 1. Package content: only the above package content, excluding other products. 2. The size is manual measurement, please allow 1-2cm measurement error. 3. Due to different displays and lighting effects, the actual color of the item may be slightly different from the color shown in the picture.