Based on this product's specifications, here are some alternatives and similar models
Rittal SZ 2479.000 Adapter for connector cutouts, steel, silver
Summary description:
Rittal SZ 2479.000 is a steel adapter designed for connector cutouts. Finished in silver, this accessory provides a durable mounting solution for electrical or enclosure connectors where a reducer or adapter is required. Suitable for industrial enclosures and control cabinets to secure and align connector interfaces.