-PC4-M6 Fittings: thread M6/3mm, inner diameter(blue end) 4mm, suitable for the tube whose outer diameter is 4mm. PC4-M6 fittings are made of copper and plastic. Sealed ring leakproof design. Heavy duty and durable.
-PC4-M10 Fittings: thread M10/6mm, inner diameter(black end) 4mm, suitable for the tube whose outer diameter is 4mm. PC4-M10 fittings are made of stainless steel and plastic. High hardness and Anti-corrosion.
-Teflon Tube: outside diameter 4mm, inside diameter 2mm, 2 meters in length; density 2.15-2.20g/cm3; it made of premium PTFE (Poly Tetra Fluoro Ethylene) material, safety and non-toxic, heat resistant up to 260?.
-Compatibility: compatible with all 1.75mm PLA ABS 3D printer
-Easy to install: Press and hold the blue or black part of the quick fitting and pull out the tube. Connecting by the outer thread of the quick fitting, easy to disassembly.