GZ-360s – Hose coupling, reducing – ø12 / ø10 – steel

GZ-251s – Hose coupling, reducing – ø16 / ø12 – steel

GZ-230 – Straight coupling, equal – Ø6 / Ø6

GZ-252s – Hose coupling, equal – ø16 – steel

GZ-353 – Hose coupling, reducing – Ø15 / Ø15 – Brass

GZ-330 – Straight coupling, equal for CNG Ø 6 / Ø 6