Duro Bicycle Tube 20 x 1.3/8 F/V 33mm

High-pressure inner tube engineered for precision performance on compact and folding bikes. The 20 x 1.3/8 sizing fits standard lightweight frames where durability and reliability matter.

The Presta valve head and 33mm length ensure secure seating and easy inflation with floor pumps and portable compressors. Butyl rubber construction resists punctures and maintains pressure over extended rides.

Ideal for urban commuting, casual touring, and riders who demand dependable tube performance without compromise. Compatible with standard 20-inch wheel setups across foldable and compact bike platforms.