VANICE 2 Pcs Bike Presta Valve Extender, 60mm (Black, Blue, Silver) Aluminum Alloy Bicycle Inner Tube Tire Accessories/Black

My valves are too shortNow it doesn't matter.

Worthless product and now in the trash. Can’t screw in a core and the thread is wrong. Basically a useless piece of aluminum. Should have read the other reviews first. Don’t make the same mistake I did.

exactly as described

Hi, I have received 2 Tube and the extender.Can you please confirm you have shipped the right dia of the extender, in which the removed core to go into the extender and the extender screws into the attached tube valve.It looks like extender dia is bigger in one end and in other end its small.I tried all possible way to install. Did not work unfortunately.Please advise. If I can not use it. have to return

Ok so as others have noted, these are basically worthless. Normal valve extenders allow you to remove the core on the tube presta valve, attach the extender, and then reinstall the core at the top of the extender. That is what I wanted but not what I got. These are basically just a tube that screws onto the top of the existing presta valve (with core still in place). You can use these but not in the way I am used to with normal valve extenders. Basically to use them, you need to open the tube presta, screw on the extender, blow air into the tube with a pump and then quickly unscrew the extender before any air escapes. It does work and the air lost is probably less than 1psi. However, they are definitely more work than other solutions. Don't buy these.

such a waste of time buying these, they do not have the proper threads to seal, this causes the tire to not inflate properly. DO NOT BUY THESE, they are not worth it. YOU will just return them.. also I bought 60 mm and they sent 30mm. these are junk.....

These are not compatible with standard presta valves, I have no idea what valves they are intended to fit bu they are too large in diameter to fit a valve core or screw in to the tube shaft with the valve core removed.

I watched YouTube tutorials and spent two hours trying out different methods, no dice. It's doesn't hold the valve even after using plumbers tape to create a seal. I should have read the reviews before making the purchase.