GZ-230B – Straight coupling, reducing – Ø6 / Ø8

GZ-249s – Hose coupling, reducing – ø16 / ø8 – steel

GZ-364 – Hose coupling, reducing – Ø21 / Ø21 – Brass

GZ-252 – Hose coupling, equal – Ø16 – Brass

GZ-363 – Hose coupling, equal – Ø19 / Ø11 – Brass

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