Aquarium CO2 trachea

Specification: as shown
Material: PVC transparent hose
Characteristics: flame retardant, oil resistant, corrosion resistant, anti-aging, etc.
Size: 4mm*6mm

Material: silicone translucent hose
Features: strong flexibility, resistance to deformation and deformation, micro-elasticity
Size: inner diameter 4mm* outer diameter 6mm-0.02

There are errors in manual measurement, especially the silicone hose, due to elasticity, the size is subject to actual