SQlab M-D Serie Mode D'emploi page 31

Warning
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Clamping of the saddle frame with non-opposing clamping
jaws or clamping surfaces is to be avoided in all cases.
Otherwise, the saddle frame is subjected to a bending stress
that can lead to premature failure or sudden breaking during
use and thus to an accident.
Assembly of the SQlab M-D Line saddle using a so-called
saddle block should be avoided. The clamping surfaces are
usually unfavourably short and small, so that reliable clamping
of the saddle without damaging the saddle frame can not be
guaranteed.
This may lead to an impairment of product safety and damage
with consequent breakage. The saddle frame could suddenly
and unexpectedly break during use and an accident may occur.