"??[4 Different Sizes & Enough Quantity] Our set includes 4 different sizes of collar stays, 56mm, 6 3.5mm, 70mm, 76mm. You can choose to adapt the neckline adjuster to different shirt designs with a suitable length for a better fit. There are 10 of each size, 40 in total, enough quantity to meet your daily needs, you can use it with confidence.??[High Quality Stainless Steel] The shirt collar is made of high quality stainless steel material, not easy to bend or break, rust-proof, very strong and durable, reusable, perfect for long-term use. Don"t worry about it rusting if you accidentally throw it in the washing machine with your shirt. Furthermore, they are small, lightweight and easy to carry.??[Support and Keep your Shirt Collar Strong] With this shirt collar reinforcer, you can shape hanging shirt collars, smooth out constantly rolling shirt collars, and keep shirt collars firm and straight. Also, the shirt collar also has a smooth edge that won"t scratch holes in the collar and won"t tear and puncture the shirt.??[Universal Shirt Collar Reinforcement] Our collar stiffeners are suitable for lapel shirts in most fabrics. Such as cotton shirts, silk shirts, crepe de chine shirts, polyester cotton shirts and other lapel shirts. If you want your shirt collar to stay tight at all times, then you must need these collar reinforcements.They can help you maintain a professional or handsome look for important occasions.??[A Thoughtful Gift for Boyfriend or Dad] If you"re struggling with what to get your dad or boyfriend, these metal collar support will be the perfect choice, especially if they need to wear their shirts a lot. This is the perfect gift for Dad, Husband and Boyfriend Birthday, Father"s Day, Graduation, Wedding, Anniversary, Christmas." Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.