had a couple of other Kenda's fail where the valve stem meets the rubber. They lasted 10 years, but both failed within a week. Hoping for better with these. Not a lot of choices in the tube market.
Discounted commodity purchase. Air loss at about 2%-3% daily. If using long stems on shallow rims, be sure that value stem is secure or some flats will occur at valve base. Have patched and the repair provided a lasting seal and a useful tube. Many punctures seem to happen near a seam, so patching is useless.