ITTSB Blog this engaged with BRYMEN products reviews since
2011.
BM257 and BM869 these was from the first arrivals.
About BM257, I have use it allot, always gently,
test leads wires they were discolored from exposure to sun light, but they survived for
14 years, this month both of
test lead probes their rubber cover, this started
melting down.

Both test leads probes, they have now become as
sticky and unusable.

While BM257, RED rubber holster, this does not show aging issues up to date.
About BM869 I have use it but not allot, even so, BM869 test leads, one of them demonstrated issues at making good electrical contact.
At banana plug connection to wire, BRYMEN this using
crimped method, this connection loosens, and this test leads pair it become useless.
The only fix, this is both 90 degree banana plugs to be replaced with new.
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Over the years I did read and other users complains, about BRYMEN Tests leads. In some occasions especially of nervous users, it might sound as possible to kill one good pair of test leads, by pooling the wires of test leads,
due an accident or due misuse.
In my case, I always was super careful, and therefore
BRYMEN manufacturing this using crimped method this is to blame.
If you live within European Union, and you seek replacements for damaged BRYMEN test leads?
I am thinking of
HIOKI test leads as a much safer bet.