Teflon Tube: outside diameter is 4mm, inside diameter is 2mm, made of durable PTFE (Poly Tetra Fluoro Ethylene), with non toxic and wear resisting, the density is 2.15-2.20g/cm3, heat resistant up to 260?
PC4-M6 fittings: thread M6/3mm, inner diameter(blue end) 4mm, fit for the tube whose outer diameter is 4mm, made of premium copper and plastic, durable and sturdy
PC4-M10 fittings: thread M10/6mm, inner diameter(black end) 4mm, fit for the tube whose outer diameter is 4mm, made of stainless steel and plastic, antioxidtion, anti corrosion and high hardness
Easy to install: connecting by the outer thread of the quick fitting, easy to install
Compatibility: compatible with all 1.75mm PLA ABS 3D printer