Based on this product's specifications, here are some alternatives and similar models
Transitional PE Female Thread Connector Unidelta 25 mm x 1/2" (601624)
Summary description:
Unidelta transitional connector for polyethylene (PE) pipe systems with a 25 mm socket to 1/2" female threaded metal connection (model 601624). Designed to join PE piping to threaded fittings or valves, it provides a secure mechanical transition between plastic pipe and metal components. Suitable for water distribution, irrigation, and low-pressure plumbing installations.