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100% Creality official Pneumatic Fittings.

1x PC4-M6 fittings: thread M6, made of brass.

1x PC4-M10 fittings: thread M10, made of nickel-plated brass. All Inner diameters are 4mm, fit for the tube whose outer diameter is 4mm. - Our listing for Bowden Tube - https://www.ebay.co.uk/itm/226035199977

The end connections of quick fittings with blue clips are able to bear greater and stronger impulse and won't come off. Not easy to rust, has a long service life, has no burrs, and will not scratch your hands.

Widely used for connecting Bowden extruder and PETF tube. These Pneumatic Fittings are compatible with all 1.75 mm PLA/ABS 3D printer filaments.

Heat resistance, Non-tripping while enduring huge pressure and a long cycle of life.