Max Mobility

These are Kenda brand tubes in a 1 inch diameter. I used these with Crosscourt tires, which are 24x1, for everyday use. I have had 2 of these with defective valve seals right out of the box. They were unable to hold air and patching that area was just not acceptable to me. I am trying the Kenda brand heavy duty tubes now to see if they have better quality control on the valve seal. The heavy duty tubes are twice the cost, so I am expecting them to have no defective valve seals. I wil add a review on those later...