T20 DURABLE QUALITY RESIN COLLAR STAYS - Cochic quality thickness of 0.55 mm (0.02”) to keep your collars sharp and crisp all day long. Collar stays come in 5 different lengths. Choosing the correct collar stay is contingent on the shape and width of your dress shirt collar. If you prefer to receive more units of a specific length and receive fewer units of another one, please let us know with your order. We will be more than happy to accommodate your request! Selection of 5 Sizes: * Extra small: - 2 units of 1.96” x 0.39" (50x10mm)