Safely secure multiple layers of material together or add decorative accents to projects with the Dritz Double-Cap Rivets & Tools Set. The rivets can be used on fabric, vinyl, leather, canvas, and more, and they're a great no-sew option for projects with tight areas or thick layers. The double-cap on the rivets also provides a nice finished look to both sides of projects. - Dritz Double-Cap Rivets & Tools Set.