Based on this product's specifications, here are some alternatives and similar models
TDM Brass 1/2" x 15 mm Male/Female Extender
Summary description:
The TDM Brass 1/2" x 15 mm extender is a high-quality plumbing fitting designed for extending pipe connections in water supply and heating systems. Featuring a male-to-female configuration, this brass component ensures a reliable and leak-proof connection. It is suitable for professional plumbing installations and DIY repairs, offering durability and resistance to corrosion in various hydraulic applications.