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Packaging includes: New - 2 Pcs 20x4.0 Inner Tube with Schrader valve stem and dust cap, 2x Extra dust caps, 2x Valve cores, 1x small tool, as the first picture shows. NOTE: Please confirm the tube size and the valve stem before purchasing
Compatibility: 20x4.0 tube is designed for 20" x 4.0" fat tires, universal for mountain bikes, Ebike, Electric Bicycle with 20x3.5 - 4.0 tires
20 inch fat tube size: Schrader valve stem length: 32mm, outer diameter of tube: 525mm/20.67"; inner diameter of tube: 418mm/16.46"; width of tube: 65mm/2.56"
Premium material: These 20" inner tubes are made of high quality butyl rubber that is tear-resistant and thicker than normal inner tubes to provide better shock absorption
Installation Tips: Note: The inflatable inner tube should avoid being pierced by sharp objects. Before installing the inner tube, you can check whether the inner tube is damaged or not: put the inner tube into the water, if there are air bubbles, it is damaged, please contact us. Please check the position of the valve to make sure the installation direction is correct

Are you bothered by worn out old tire tubes?
Now our inner tubes will be your best choice!
2 Pcs 20 x 4.0 Inner Tubes
ADVANTAGES:
√ NEW.
√ Durable & Reliable.
√ Better shock absorption.
DETAILS:
Model Name: 20 x 4.0
Material: Butyl Rubber
Package Contents: 2 Pcs 20x4.0 Inner Tube with Schrader valve stem and dust cap
2x Extra dust caps
2x Valve cores
1x small tool
FITMENT:
20x4.0 tube is designed for 20" x 4.0" fat tires, universal for mountain bikes, Ebike, Electric Bicycle with 20x3.5 - 4.0 tires.
NOTE:
The inflatable inner tube should avoid being pierced by sharp objects.
Installation Tips:
Before installing the inner tube, you can check whether the inner tube is damaged or not: put the inner tube into the water, if there are air bubbles, it is damaged, please contact us. Please check the position of the valve to make sure the installation direction is correct.