Lifeline Inner Tube 700C x 18-25mm Designed for road bike. Crafted from durable rubber for long-lasting performance, it's an essential item for cyclists seeking dependable performance and peace of mind on the road or trail. This LifeLine inner tube is perfect for keeping in saddlebag or workshop, make sure you're always ready for the unexpected. Specification >Three size Presta Valve : 48mm, 60mm and 80mm >Rim : 700C >Width : 18-25mm >Inner diameter : 622mm