In reply to AndrewB:
They have lasted 11 years because they are only used if the Quasars and Vertiges I use instead are somehow absent or I am climbing with 2 other people who need to borrow kit.
They are too light and badly balanced and the rubber handle grips are slippy and worn out.
I thought one axe was much the same as another till I tried the Charlet Mason Quasars. They are the dogs.