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✓Heavy Duty Inner Tube Size: 700x35C/38C/40C/43C AV48mm (ETRTO:35/43-622) bicycle replacement inner tube, these inner tubes are ideal for a wide range of applications, which could fit 700x35C 700x36C 700x38C 700x40C 700x42C or 28"x1-3/8" to 1-5/8" bike tires
✓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, upgrade your ride experience
✓HEAVY DUTY – Air Tightness: Premium high-elasticity butyl + EPDM rubber, 40% thicker, with 200% higher air tightness than ordinary butyl tubes. Holds higher pressure for 6–9 months after inflation, good air tightness helps keep tire pressure stable, thus improving driving safety
✓HEAVY DUTY – Ultra Durable: Our 700C/28'' heavy-duty inner tubes offer higher puncture resistance than ordinary tubes. The thicker body withstands more friction and wear, extending service life while reducing replacement frequency and maintenance costs
✓Applicable Scenarios: Compatible with corresponding models of mountain, road, cruiser, and electric bikes. The increased thickness meets the longer range and heavier load demands of today’s e-bikes
✓Package Includes: 2 pcs heavy duty bike tubes 700x35/43C AV48mm schrader valve and 2 pcs upgraded tire levers
✓Upgraded Tire Lever: Wider, longer, and thicker to fix common issues of small size and poor sturdiness. High hardness and bend/fracture resistance, plus an ergonomic widened handle for a comfortable, secure grip. Smooth edges protect hands and tires from scratches during installation