200x 9.5mm Press Stud Snap Fasteners Kit Prong Plier Ring Popper DIY Tool. Each set contains 4 parts: A male, female and 2 prong rings. 9.5mm Prong Ring Set. Perfect for Baby Grows, Keyrings, Shirts and Jeans, Jackets, Bags, Bandanas, Nappies, Bibs or other general arts and crafts.