Great quality heavy fastening press fasteners from Prym. These fasteners are brass, rustproof and very strong. They are designed to be used on camping and sports equipment but can be used on many different types of fabric. The pack comes with the tool to apply the fasteners. You would certainly find it easier however using the Prym Vario pliers which will simplify and speed up the process. Prym Non-sew Fasteners Sport&Camping Antique Brass 15 mm, one size Product Description Prym 15 mm Antique Brass Sport and Camping Non-Sew... Non-sew press studs for solid fabrics in camping and sports For high loads Strong closing power Corrosion resistant 1 x Prym - Prym Sport and Camping Brass (15mm) Non-Sew Press Fasteners - 1 Unit