I've used a half dozen of these tubes on the rear of a 2001 Yamaha V Star 1100 over the past several years. Never had a problem....no flats. Sometimes during installation, it's a pain fitting your hand inside the tire to guide the long right-angle valve stem through the hole in the rim....but if you want / need a right angle valve stem what are ya gonna do? Nice quality tube.
This item was approved by my mechanic, it's simple, inexpensive, and works. I give it 5 stars across the board because there have been no issues with the purchase or product. Customer service tried to steer me towards a much more expensive tube. But this tube works just fine.
I use this tube with Rear Exedra Max 160/80-15 Blackwall Tire on my 2004 Honda Shadow Aero. I have wire spoke wheels so I need a tube and I can not find one specifically for 160/80-15 tires. This is the second tube I have purchased. First one will be a spare as I swapped the tube when I put a new tire on.