✓700C/28in Heavy Duty inner tube: 700x35C/38C/40C/43C AV48mm bicycle replacement tubes, these inner tubes are ideal for a wide range of applications, and further enhance the flexibility, which could fit 700x35C 700x36C 700x38C 700x40C 700x42C or 28"x 1-3/8" to 1-5/8" bike tire tubes
✓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
✓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 28''/700C 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
✓Applicable Scenarios: This heavy duty inner tube is compatible with the corresponding models of mountain bikes, road bikes, cruiser bikes, electric bikes; same time, the increase in thickness can meet the needs of the longer driving range and load of the prevailing electric bicycles
✓Installation: 700C bicycle heavy duty inner tube for easy installation and removal. Make sure no sharp objects on the rim before install, check the valve position to ensure that the installation direction is correct
✓Good Service: We offer a wide range of reliable bicycle tubes and tires with excellent service. Please confirm your tire size before purchase. If unsatisfied, email us or return the item for a full-refund