What's in the box:

Creality 3D PTFE Teflon Bowden Tube 2mm ID 4mm OD 40cm Length for Ender-3 3D Printer 1.75mm Filament, 1pcs (White)

Features:
Inner Diameter (ID): 2mm/ 0.08in. Outer Diameter (OD): 4mm/ 0.16in. Length: 40cm/ 15.7in.
Suitable for Ender-3 3D printer 1.75mm filament.
Excellent resistance to high and low temperature.
Wear resistance, fire-resistant, climate-resistant, nonabsorbent, and good dielectric properties.
Made of high-quality material, non-toxic and environmental protection.

Specifications:
Model: ID2mm OD4mm
Material: Teflon
Color: White
Inner Diameter (ID): 2mm / 0.08in
Outer Diameter (OD): 4mm / 0.16in
Length: 40cm / 15.7in
Package Size: 13 * 9 * 1cm / 5.1 * 3.5 * 0.4in
Package Weight: 11.1 / 0.38oz

Note:
This item does not include tube connector.

Package List:
1 * Bowden Tube