According to the BMC,
Troll is recalling a number of crampons which may suffer from
problems with plastic components becoming embrittled in very low
temperatures.
The models concerned are:

• T10 Flexfit
• T12 Flexfit
• T12 Fastfit
If you own a set of the above, you should contact either the
retailer where you bought the crampon or get in touch directly with
Troll on 01457 878822 or by e-mail.
You'll be allocated a return number which you must have before
sending the crampons to Troll where the components in question will
be replaced.
Troll web
site