Blue Teflon Tube: be made of durable PTFE material, safe and odor-free, non-stick surface, self-lubricating, insulation, non-combustible, high and low-temperature resistance, corrosion resistance; Inside diameter 2mm, outside diameter 4mm.
PC4-M10 fitting: stainless steel and plastic material, anti-oxidation, anti-corrosion, and high hardness; Thread M10/6mm, inner diameter(black end) is 4mm, fit for the tube whose outer diameter is 4mm.
PC4-M6 fitting: copper and plastic material, durable and sturdy; Thread M6/3mm, inner diameter(blue end) is 4mm, fit for the tube whose outer diameter is 4mm.
Compatibility: can be compatible with all 1.75mm PLA ABS 3D printer and other devices.
Easy to Install: connecting by the outer thread of the pneumatic fitting.