Material: High quality rubber and nylon. The elastic design provides constant tension and a firm hold. Nylon elastic loop with plastic ball. Use: The elastic loop passes through the eyelet to pull the rope through the hook, then pull the loop over the plastic ball. Application: Pull the cord through the hooks/eyelets and pull the loop over the plastic ball. Holds tarp, shade, boat covers, tents, awnings, flags in a fixed position. Note: Depending on the project, loop end may be hooked to one object or another elastic, or ball end can be slipped into a hook or other attachment. Size: 15.5cm Scope of delivery: 20 pieces Note: The data is manual measurement, please allow 1-3cm error, due to differences between light and screen, there will be a certain difference in color, the specific received in kind shall prevail.