The Allstar Performance Countersunk Bolt Kit includes high-quality 1/4-20x1 inch long Allen head bolts with 1.25 inch OD countersunk washers and nuts. Made from durable aluminum and steel, featuring a sleek black finish. Ideal for applications requiring a flush surface like mounting roofs, side skirts, spoilers, and more. Kit contains 10 sets, providing a finished professional look.