Comments about Nashbar 48mm Long Valve Presta Tube 700x19/26:
3 tubes punctured in 2 rides. In each case I visually and physically inspected both the tire and the rim to see if they harbored anything that would create a puncture. That included rubbing the inside surfaces vigorously to remove anything I may not have seen. I did not see or detect anything. After the third puncture (6.5 miles into the ride) I stopped using these tubes and replaced it with an old patched Michelin tube. Guess what - no problems.
Conclusion? These tubes are extremely low quality and should be avoided at all costs.
Was this a gift?:
Bottom Line No, I would not recommend this to a friend