These Split Ring Pliers are part of Penns Saltwater Series of tools, designed to handle the worst Australia can throw at you. Theyre made from premium grade carbon steel for ultimate strength and durability, with high-quality Teflon coating for fantastic corrosion protection. The fine split-ring tooth design doesnt bend or twist when used, and the inbuilt locking mechanism keeps the jaws shut when not in use. Its worth investing in a high-quality set of tools like this that wont rust up and let you down in saltwater environments.