Based on this product's specifications, here are some alternatives and similar models
Cable clamp OBO Bettermann Multi-Quick-Schelle ME for 16–20 mm cables, light grey
Summary description:
Multi-Quick-Schelle ME cable clamp from OBO Bettermann designed for securing round cables with diameters of 16–20 mm. Made for quick installation, the light grey clamp provides reliable mechanical support and strain relief in electrical installations. Suitable for mounting on walls or fixtures in residential and commercial settings to organize and protect cables.