Based on this product's specifications, here are some alternatives and similar models
Brass Extension 3/4" 40 mm FERRO P140Z (mpn 411522)
Summary description:
FERRO P140Z is a brass extension fitting with a 3/4" thread and 40 mm length, intended for plumbing installations. Made of brass for corrosion resistance and mechanical strength, it is used to extend pipe connections or adapt existing fittings. Suitable for sanitary, heating and water supply systems where a short threaded extension is required.