Package consists of 2 inner tubes. Compatible sizes: 20 x 1.75 / 1.95 / 2.0 / 2.10 / 2.125 inches. Suitable for 20" bicycle wheel tyre48mm Schrader Valve, AV, Car Type Valve. Weight: 250 gr each tubeMade of quality butyl construction. Excellent replacement bicycle inner tube. Plastic valve cap included- tubes has passed all relevant CE and ISO certificates- - buy with confidence from UK brand. Full after-sale support and manufacturer warranty.