Specifications: High quality mountain/road bike tire inner tube. Made of butyl rubber, solid and durable, won't leak air. Make your bike more excellent. Item Name: Bike Tire Inner Tube Material: Butyl Rubber Valve Type: FV Size: 700x18-25C F33mm, 700x18-25C F44mm, 700x18-25C F60mm, 700x18-25C F80mm, 700x25-32C F33mm, 700x25-32C F48mm (Optional)
