The Lot of 2 Co-Op Cycles Bike Tubes are designed for bicycles with a 700 x 35-43C tire size and feature a half-thread Presta valve for easy inflation. Made in Indonesia, these inner tubes come in a set of two to ensure you have a spare on hand for emergencies. The valves are 48mm in length, providing a secure fit to your bike's rim. Perfect for cyclists looking for reliable and durable inner tubes for their rides.