6PCS Presta to Schrader Valve Adaptors for Bike, Convert Presta Valve, Inflate Tire with Standard Pump or Air Compressor, Includes 12PCS Tire Valve Caps Review

Well done, great price and idea. Just one problem, they only work if you inflate a tire. Of course, you can put a toothpick in it and deflate it, or you can also remove this adapter. But I just want the buyer to know.

I thought it would be great so I could use my regular pump with my presta valved bike. Unfortunately they don't seal well with my pump so the blower just pops out of this adapter. I ended up buying a pump that can work directly with Presta valves. In general, I now have spare hubcaps for my car.

If you have a Presta valved bike, good luck finding a place to inflate your tires. Most places that have compressed air only have fittings for Schrader valves. This means that the tire inflators with Schrader valves can also be used to inflate tires with Presta valves. I always keep a pair of these in my presta valve bike tool kit. just in case!

The adapters I received appear to be of good build quality except the male thread (Schroeder) was very poorly finished. The threads do not penetrate the material as deeply as they should. No threaded fuel nozzle can support the connection with the adapter. The thread that goes to the valve is very well made. I bought it because it was threaded on the outside, but it's not.

Just need two, here are six. The metal adapters fit well and are easy to mount on my bike tires (2 minutes). However, black plastic air caps are NOT SUITABLE; Thread does not stick. 3 stars because the part works great as an adapter, but the caps don't fit. You won't necessarily lose air, but the right caps make this a 5 star product.

In my experience they are a bit small. This is how the thread works and is screwed onto the Presta valve. but they leaked when I connected them to the pump. If you have a big compressor, you can pump air up fast enough, so it doesn't matter, but with a hand pump or some other slower type, I was losing air faster than I could pump air into the tire. So I compared them to other adapters that work well. The ones that work well are slightly larger in diameter and therefore seal well. It's only a…

The adapter can therefore be screwed perfectly onto the Presta valve. The downside is that the diameter of the top of the adapter doesn't quite match. The supplied cap cannot be screwed on properly. Threads are not taken. I can take off my hat right away. Tried all the caps that came with it. Everything the same. But the problem is that everything is fine with the caps. I tried them on my old bike with Schrader valves and they fit perfectly. Then I tried screwing the old cover from my old bike…

Nothing is more annoying on a bike ride than finding out you need to inflate one of your tires, only to find that the hoses on this bike are the wrong type of gas station air hose fitting. Then they show up. Yes, the *process* remains tedious; You need to remove this adapter, unscrew the small nut to loosen the valve core, squeeze it a little to make sure it's not stuck, reinstall the adapter, inflate the tire, remove the adapter, *&^% nut again tighten, and then put the adapter back on to have

Threading is correct - it fits easily into the Presta hose valve and both my hand pump and air compressor blower fit snugly. BUT both pumps have a center pin that needs to be pushed in to allow air to flow. When I put the inflator directly onto the presta valve, its diameter is small enough to push on the pin (but doesn't seem to be pushing air into the hose). With one of these adapters in place, the Presta valve will not extend far enough to engage the pump pins. If there was a way to change…