New head is the improved locking type that firmly stays on the valve stem. The 40.0 locking Presta pump head presses into a hose so a clip, hose clamp or zip tie is required.
I have an older brass version of this that has been in use for several years and is great. I bought a 2nd one to keep at the velodrome storage locker and it's the current cheap aluminum version. I snapped one within the first few uses just like several other reviews. I was quickly given a replacement at no charge. The replacement has been working for about a year, but I'm much more careful with it. It's a shame that silca didn't stick with the old school quality brass design as it was much more durable.
Pros: great product while it lasts
Not happy with it at all. Have had for two weeks and used it about 5 times and it broke just like the other two above where the barrel joins the locking presta head. Very disappointed!
Pros: Looks nice, makes a great paper weight.
Cons: Flimsy, shoddy construction.
I've had one of these for a couple of years, and I've used it daily. I have no problems with it. In fact it's the best locking (or otherwise) pump head I've ever used. I just ordered a second for my summer place. After reading the other reviews I guess I'll be gentle as heck with it from now on!
Pros: Locks on all the tubes I have and doesnt leak.
Cons: None for me
Poor quality the tube join broke after 1 year. It should be made form better material like brass not aluminum. I did reuse my older brass fitting.
Cons: low quality
Ive broken 2. They snapped off at the junction of the barrel and stem. It is small and brittle.