Based on this product's specifications, here are some alternatives and similar models
Hotend Heater Cartridge Spring JZK DHA0450
Summary description:
Replacement spring designed for hotend assemblies, compatible with JZK model DHA0450. Serves as a mechanical component to maintain tension and positioning within a 3D printer hotend or heater cartridge assembly. Suitable for repair or maintenance tasks to restore proper filament feed alignment and reduce mechanical play.