Product Features: This Marine Throwing Cable Ball, also known as a throwing cable head, is an essential tool for help operations. It can be paired with a throwing cable rope or a float rope for lifeguard purposes.Material: The rope throwing ball is made of rubber on the outside and contains cast iron parts on the inside, ensuring its longevity and reliability in harsh marine conditions.Hole Diameter: With a hole diameter of 11.5mm, it can accommodate cables, lifeguard ropes, and float ropes of 11mm less.Portable: The Throw Weight ball is small in size, making it compact enough to be easily stored and transported while still being effective in its function.Package Contents: Each package contains 1 Marine Throwing Rope Weight Ball in black color - great for your marine safe needs.Specification:Material: Rubber, ironSize Chart:5.8cmx12cm/2.28inchx4.72inchPackage Includes:1rope throwing weightNote:Please allow slightly errors 1-2cm differences due to manual measurement.