• ⛟ Bike tubes are made of butyl rubber, better air tightness, resistance and goods (28 inch with presta valves (French valve).)
• ⛟ Reinforced dual thickness tube / valve interface to prevent punctures.
• ⛟ Tube, 700 x 23C, 60L presta valves. High air pressure retention; Valve Type: Presta 42mm Valve, Quality Precision Manufactured Valves.
• ⛟ Replacement inner tube for children's bike, leisure bike, mountain bike, sports bike.
• ⛟ 24-hour service: If you have any questions or questions about our products, please by email in time, we will respond to your email within 24 hours, thank you for your trust.

1 Piece Inner Tube Mountain BIke