Upgrade or repair your shirts with this 12-pack of Sport Collar Shirt Buttons in a standard 16L (10mm) size. These durable 4-hole resin buttons are ideal for sport shirts, dress shirts, uniforms, and casual wear. Designed for precise sewing and long-term use, they are perfect for collars, sleeves, and front plackets. Whether you're a tailor, hobby sewist, or simply replacing missing buttons, this set offers a reliable, high-quality solution.