Inner tube 10 x 2.50 for electric bike, scooter, rear wheels, curved valve.
The 2.5 is the section width in inches. The 10 is the outer diameter of the wheel in inches, not the rim diameter.
Note: this is 10x2.50, not 2.50-10, they are two completely different sizes.
The hose is made of isobutylene isoprene rubber, which is better than natural rubber in terms of air tightness, elastic cushioning and ageing resistance.
Stem: inner tube with curved TR87 valve
Package includes: 2 x hoses