Continental Conti Valve Extender (Pack of 2)

Good

I am sure you, like me, are thinking... do I really need this? I am also sure you, like me, learned that theres a specification on a tire tube that tells you the length of the presta stem. So I regret to inform you... yes its necessary if you, like me, bought tubes with too short of stems and realize it is not worth shipping the tubes back. Super easy to install. I had the Park Tool VC-1 tool but the included little wrench works fine. I used the included wrench to install the main cylinder. All hand tight and havent noticed any leakage. I am almost certain I can use them on the spare tube when the time comes (since I have 3 tubes but only two extenders).

use plumbers tape to get a good seal. otherwise works great. Put on 88 and 60 deep rims

i bought a set of zipp 808s and needed these to fit over my valves. they work exactly as described and now i dont have to worry about being stranded if i get a flat!

work well and much better than the external valve extenders, just remember to use some white teflon tape on the threads to seal everything up well

Fit good

I used these to help clear my 80mm carbon wheelset. Its worked excellent so far, and they held up through the ironman races I did. No air leaks.

Very good and light. I remove a start because I find annoying that they force us to buy 2 when many people have a disc in the back and 808 in the front e.g.

These are the valve extenders to get. Works perfectly, and light weight as well.

I expected them to fit a standard valve stem, but they are some strange small extenders. Length was fine, but I have standard valve stems. Not worth returning them.T