Based on this product's specifications, here are some alternatives and similar models
Alphacool quick release coupling ES, male BLH1A with integrated bulkhead fitting
Summary description:
Alphacool ES Quick Release coupling (male BLH1A) with integrated bulkhead fitting is a connector designed for liquid cooling loops. The male quick-disconnect enables fast hose or tube separation while the bulkhead fitting provides a sealed pass-through for mounting on a panel or radiator. Suitable for maintenance, modular builds and easy component swaps in PC water-cooling systems.