Classic 4-hole sew-on buttons in 12mm (1/2"), supplied on a card of 4. Four holes provide a strong, secure attachment with either parallel or criss-cross stitching. Perfect for shirts, dresses, trousers, uniforms, knitwear and bag projects, as well as general mending. Low-profile shape sits flat for a clean look. Install with standard needles and thread; knot securely and check spacing before stitching the rest of the buttons.