Based on this product's specifications, here are some alternatives and similar models
Olympic weight plate collar TKO 143SCO-CM clamp collar for 2.5 kg plates
Summary description:
TKO 143SCO-CM Olympic clamp collar designed to secure 2.5 kg weight plates on standard Olympic bars. The compact clamp provides a firm, quick-release fastening to prevent plate movement during lifts. Suitable for strength training, weightlifting and CrossFit sessions, it offers easy on/off operation and reliable holding force for safer, more stable workouts.