Based on this product's specifications, here are some alternatives and similar models
Grounding clamp OBO Bettermann 950 Z 1 Round — model 5050111
Summary description:
Grounding clamp OBO Bettermann 950 Z 1 Round (model 5050111) is a connection accessory designed to secure round conductors to grounding systems. Manufactured by OBO Bettermann, it provides a reliable mechanical and electrical connection for earthing applications. Use it for installing or repairing grounding conductors in residential, commercial or industrial electrical systems to ensure safe, low-resistance contact and continuity.