KALIONE 4 Pcs Valve Caps Stem Extension 27mm Tire Valve Extenders Brass Wheel Cap Extender Adapter for Car Motorcycle Truck

Was length needed to easily fill tires. Appear to be well made. Would buy again.

After having frustrated attempts at keeping my electric scooter tires at a proper PSI, I decided to try these. This first valve stem extension that I bought was a longer flexible extension, but it was difficult to take off quickly without losing too much tire pressure. I thought that these would be easier to take off quickly to lessen the amount of air escaping the tire. To my surprise, there is no air loss at all when disconnecting these! This is a game changer! I was having to air the tires as much as possible and then take the scooter to the convenient store air pump to air them up properly. Now, I can easily get them to proper PSI before leaving the house with a foot pump!!

These work, just wish the PSI rating was higher.

I needed these because the fill valve was hard to reach to inflate the tire. These were not to long and did a good job

They do not hold air. Very dumb design. Not even worth my time to return.