This listing is for TWO quality Continental tyres and choice of either schrader or presta valve inner tubes - Type: Wired - Size: 700 x 28c - ETRTO: 28-622 - Colour: Black - Weight: 425g - Pressure: 80-102 psi - Tubeless Ready: NO - E-Bike Rating: E-25 This super fast looking city slicker turns any bike into a racer, helping bike messengers meet those tight deadlines or fitness riders who require a faster tyre than the original knobbly tyres that their bike was supplied with. Puncture protection and reliability is taken care of thanks to Continental's renowned hard wearing tread compound and two SafetySystem anti puncture layers beneath the tread. An improved 180 tpi (threads per inch) nylon casing increases speed and comfort. This is because the finer casing.