Based on this product's specifications, here are some alternatives and similar models
Brass nipple FERRO N10Z 3/4" x 1/2" plumbing fitting
Summary description:
FERRO N10Z is a brass plumbing nipple with 3/4" x 1/2" threaded connections. Designed for joining pipes and fittings in water and heating installations, it provides a durable metal connection resistant to corrosion and mechanical stress. Suitable for domestic and commercial plumbing where reliable threaded joining between different thread sizes is required.