Based on this product's specifications, here are some alternatives and similar models
Chain Quick Link Clarks CL9 for 9-speed chains, size 1/2" x 11/128" (CLA-CL9)
Summary description:
Clarks CL9 is a quick link connector designed for 9-speed bicycle chains with dimensions 1/2" x 11/128". It provides a removable, tool-free connection point for chain installation, maintenance and repair. Compatible with 9-speed drivetrains, the CL9 simplifies chain replacement, cleaning and travel repairs while ensuring secure engagement and correct chain pitch.