Based on this product's specifications, here are some alternatives and similar models
Alphacool compression fitting 1/4" (11/8 mm) 62035
Summary description:
Compression fitting by Alphacool for liquid cooling systems, specified as 1/4" with an 11/8 mm inner/outer hose interface (model 62035). Designed to join tubing securely in PC water-cooling loops, this fitting provides a sealed connection between components and flexible tubing. Suitable for assembling or replacing fittings in custom cooling circuits.