YUNSCM 2-PCS 20x1 3/8 Heavy Duty Bike Tubes 20 x 1 3/8 FV60mm Presta Valve Premium Butyl Rubber Inner Tubes Replacement for 20X1 3/8 20x1 3-8 Bike Bicyle Tire Tubes — Open-Box, 29% Off

Special note: Only suitable for ETRTO: 36-451, which is not suitable for the European standard size of -406

HEAVY DUTY - Air Tightness: Using high elasticity and high quality butyl rubber and EPDM rubber, the thickness is increased by 40%, and the air tightness of the inner tube is increased by 200% than that of the ordinary butyl inner tube; After inflation, the tire can maintain a higher air pressure for 6-9 months, greatly reducing the inflation frequency. Good air tightness helps keep tire pressure stable, thus improving driving safety

HEAVY DUTY- Ultra Durable: Our heavy duty inner tubes have higher puncture resistance than ordinary inner tubes, and the thicker body can withstand more friction and wear, thus extending the service life of the tube, reducing replacement frequency and maintenance costs. And in long-term use

Excellent shock absorption ability: The heavy, strong, highly durable butyl rubber made from these inner tubes is a perfect shock absorber to reduce vibration and eliminate the shock caused by bumps and rough surfaces on the road or pavement. Heavy Duty butyl rubber for maximum ride comfort - upgrade your ride experience

Note: The Presta valve core of this inner tube is not removable

Installation:20" x 1 3-8" bicycle heavy duty replacement inner tube for easy installation and removal. Check the valve position to ensure that the installation direction is correct

This heavy duty inner tube is compatible with the corresponding models of mountain bikes, road bikes, Cruiser bikes, electric bikes; At the same time, the increase in thickness can meet the needs of the longer driving range and load of the prevailing electric bicycles

Tip: Before installing the inner tube, please put the inner tube into the water for inspection, if there are bubbles, it means that it has been damaged, you can contact us. Check the valve position to ensure that the installation direction is correct. Note: The inflatable inner tube should avoid puncture by sharp objects

Package Includes: 2 pcs 20 x 1 3/8 FV60mm Presta Valve heavy duty bike tubes. Note: The Presta valve core of this inner tube is not removable.