11mm 18L Light Warm Brown 4 Hole Buttons Shirt Craft Sewing Buttons B1T&D. Size approx.: 11mm 18L 4 holes. Colour: Light Warm Brown / Warm Dark Beige as shown. We aim to provide you with the essentials to replace a missing button on your trousers through to those of you wanting to create thoughtful gifts and beautiful imaginative handmade projects.