1/2" adapter for bio-filter
To fit the bio-filter for 1/2" 1st stage.
The slim outer diameter reduces the risk to interfere with other hoses.
Spec
● Material： Brass
● Length： 21.5mm
● Outer diameter： φ16.0mm
● Male 1/2", Female 3/8"
● For low pressure
● O-ring is attached