ZRDR high quality needle valve regulator suit 4*6mm co2 special tube for aquarium fish tank co2 systemCarbon dioxide fine-tuning

Aquarium CO2 trim valve

This is the photo of the new product, the appearance has been updated, the new product and the old product are sent randomly

100% brand new and high quality
Can fit 4mm(inner diameter) and 6mm(outside diameter) hose.
Ergonomically design, easy to install without using any tool.
Special metal-grinded surface, light weight, easy to operate.
Precise structure, to release CO2 by fine tuning.
Material: Metal
Size(L*W*H):4cm x 1.5cm x 3cm(approx)
Color:Silver
2 types for choose :twin head/single head
Quantity: 1 pc
Note: Please allow 1-3mm error due to manual measurement. pls make sure you do not mind before you bid.