Bicycle inner tube, Ototop, 24x1.75/1.90/2.12

Bicycle inner tube, Ototop, 24x1.75/1.90/2.12 is a universal inner tube that's 20 percent thicker than ordinary tubes for up to 40 percent more resistance. Bicycle Tube: 24" universal inner tube, Unbreakable, perfectly welded valve, Consistent wall thickness throughout the tube.