Based on this product's specifications, here are some alternatives and similar models
Archive binding clamps Elba tric System, wire with red PE coating, for up to 80 mm documents, pack of 100
Summary description:
Elba tric System archive binding clamps are wire loops with a red polyethylene (PE) coating, supplied in a pack of 100. Designed to bundle and secure loose documents and files up to 80 mm thick, they provide a simple mechanical binding solution for archives, offices and record management. Suitable for permanent or temporary filing and transport of paperwork.