Presta Valve Adapter, Convert Presta to Schrader Adaptor for Bike, Inflate Tire Using Standard Pump or Air Compressor, Tire Valve Caps(4PCS)

There is absolutely nothing more irritating about being out on a bike than discovering that you need to pump up one of the tires, and only then discovering that this bike's tubes have the wrong kind of connection for the air hose at the gas station. That's where these come in. Yes, the *process* remains annoying; you have to remove this adapter, unscrew the little nut to free up the valve core, pop it a bit to make sure it's not stuck, reinstall the adapter, air up the tire, remove the adapter, retighten the *&^% nut, and then put the adapter back on so that you've still got it next time. Life would have been so much easier if the bike's manufacturer had just used wheels that accepted Schrader valves? Right? But they didn't. So you need these. And with half a dozen, if somebody makes off with one of yours because *they* forgot to bring one, you won't be out of luck yourself.

I installed these and pumped up my tires with a regular pump in about 2 minutes. It’s been a few weeks and the tires are still full. Worth the $4 for the convenience of using standard pumps.

Comes with 6 extra caps.

Works well but I made the mistake of overtightening the first one and damaged the Schrader valve. The other 3 installed as advertised and overall this product does what it says it will do for an economy price.

I have Trek bicycle and it has always had these stupid skinny air valve that nothin will fill. These handy dandy little things work to convert them to standard bicycle pump tire valve size.Thank God because whos bright idea was it to re-invent the bicycle tire valve?These solve the problem and do it well.VERY HAPPY

For years I have had 1 adapter for 3 bikes and finding it when I need has been a pain. I got 2 of these multi pack to put in different areas super cheap works fine

Presta valves seem to vary but schrader vales do too. If you leave these installed, then to use you have to remove, open the presta valve and reinstall adapter to air up. Then remove again to close the presta valve. I've found that you have to open the presta the perfect amount, not all the way and possibly not screw the adapter on as far as it will go to get air chucks and gauges to work.

If you have a bike with a presta valve, good luck finding anywhere to fill up your tires. The cat majority of places that have compressed air only have fittings for schrader valves. This allows you to use the equipment for filling tires with schrader valves to also fill tires with presta valves. I always carry a couple of these in my tool kit on my bike that had presta valves ... just in case!