The Hollis F1/F2 Fin Spring Strap is the perfect replacement for your old fin straps. This spring heel strap is designed with an easy-grip heel tab, making it easy to put on and take off. The strap includes nuts and bolts and a spring, making it simple to assemble and install. Whether you're an experienced diver or just starting out, the F1/F2 Fin Spring Strap is sure to provide a secure fit. The strap is sold as a single, so you can easily replace a lost or broken strap.