The Lot of 3 Michelin Ultralight 700x18-23 Bike Tubes includes high-quality rubber tubes designed for 700C wheels with a valve type of Presta Valve. Each tube is 52mm in length, providing excellent durability and reliability for your bicycle. With a total of 3 tubes included in the set, you can ensure that you have a spare on hand for any unexpected punctures during your rides. Michelin is a trusted brand known for producing top-notch cycling products, making these ultralight tubes a great choice for cyclists looking for quality and performance.