Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: If I order these 27x1-1/4 Schrader tubes, will I receive exactly the Schrader valves, and not the Prestas? And will this size 27x1-1/4 fit a 27"x1-1/4
Document: My order was correct. My tubes were the right size, 27", and they had Schrader valves. I bought 2 of these to replace both inner-tubes on my bike. I wanted an inexpensive fix and decided to try these despite mixed reviews. They were easy to install and had no apparent defects upon arrival. The first time I rode my bike, after 20 minutes of ride time, one of the tubes popped. The price was fixed to sell, but ultimately not worth it.
My order was screwed up. The tubes I received had Presta valves, and not the  advertised Schrader valves. I had to quickly scramble among the local bike shops to find a converter piece, as I had no time to return the tubes since we were leaving for vacation.
27 x 1 1/4 vintage stuff for old French bicycles is not always easy to find these days. These are perfect replacements.
Not the correct size. The tube is much larger than original tube. Will not fit. More size info needs to be stated by seller. Both the new tube and original state same size, however, there is more info on original tube that is not stated in sellers listing. Waste of time and money. Go to a bike shop to buy tubes for exact fit. Amazon is not a bike shop and is oblivious to bike parts.
I just started using these tubes, although they were sized 26 X 1.9-2.35. I have rarely had problems with flats, and I ride ALL THE TIME! I rode three days straight and got four flat tires. The terrain I was riding was rocky, but not so much as to warrant flats at such an alarming rate.Additionally, the air valve is a very loose fit, but I was able to get air in the tires. I thought my pump was jacked up at first, took apart the pump, and re-inflated with same results.
The product was fine but the valves were presta instead of shrader had to order adapters and still cant use my bike
I bought these for my son's bike. These tubes were exactly what was needed at a good price. They arrived before the delivery date. We are very pleased with this product.
I bought 2 of these for my road bike which takes the 27 inch tube like the box says and they way bigger then my rim so now stuck with 2 tubes can't use.
Niagara does a great job again with low prices and excellent delivery. These tubes fit the older style rims of racers - just what I need to keep some 30 year old bikes rolling.
I bought 2 of these (on the streets on nyc, sometimes I go through tubes quickly). both of them seemed to be a bit large upon installation, but I figured as they were marked the right size they would be fine. I aired them up and they caused my tires to bubble. The 1st one blew out before I got a chance to deflate. before I bought the 2nd I bought a brand new tire and rim (thinking that the bubble was caused by a rim that was slightly bent or worn out tire).
Answer: no