Based on this product's specifications, here are some alternatives and similar models
tdm_brass Hose-End Connector 1/2 inch to 20 mm Male Thread
Summary description:
The tdm_brass hose-end connector features a 1/2-inch male thread and a 20 mm hose barb. Constructed from durable brass, this fitting is designed for secure and reliable connections in plumbing and irrigation systems. It ensures a tight seal for fluid transfer, making it an essential component for professional and domestic water supply installations.