Based on this product's specifications, here are some alternatives and similar models
Hager M5850 cable trunking system accessory profile holder made of black PVC
Summary description:
Hager M5850 cable trunking system accessory designed as a profile holder for routing channels. Manufactured from durable black PVC material with a length of 35 mm. Ideal for secure and organized cable management installations in professional networking and electrical setups.