Based on this product's specifications, here are some alternatives and similar models
Folder binding accessory LEITZ 177162 — binding component for office folders
Summary description:
LEITZ 177162 is a folder binding accessory designed as a replacement or additional binding component for office folders. It is intended to secure documents within ring or lever files and to support organized storage and easy retrieval. Suitable for use in offices, schools and home workspaces where reliable folder fastening is required.