GZ-253As – Hose coupling, equal – ø19 – steel

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

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

GZ-361 – Hose coupling, equal – Ø22 / Ø16 – Brass

GZ-249 – Hose coupling, reducing – ø16 / ø8 – Brass

GZ-330 B – Straight coupling, equal for CNG Ø 6 / Ø 8