Based on this product's specifications, here are some alternatives and similar models
TDM Brass Extension M/M 1/2" x 100 mm
Summary description:
The TDM Brass M/M extension with a 1/2 inch thread and 100 mm length is a durable plumbing component designed for extending pipe connections in water supply and heating systems. Made from high-quality brass, it ensures reliable performance, corrosion resistance, and a secure fit for various industrial or residential plumbing applications.