Caleb Components is a stockist of both Single Coil and Double Coil Retaining Pins (also known as R-Clips).
You can purchase the Single Coil type here on our online store.
(please use this link)https://springfasteners.co.uk/product-category/pins/retaining-pins-single-coil-r-clips-bright-zinc-plated/

We also offer Double Coil Retaining Pins (R-Clips) in various sizes and materials. Please let us know if you have any enquiries for these parts and we will do our best to help you find that you’re looking for.