5 string Flatwound set with a Tightest & Stiffest low B string?

All EB traditional flat use “Group ” word on 4 string set, but there are no single “ Group” word on it 5 string set.

@Yahboy Sorry for asking more but, can you tell me how much tension the 2810 has? I'm new to flatwound strings so I have no idea. Can you give me approximate comparison? Also sorry if you cannot understand my words because I'm not an english speaker.
 
@Yahboy Sorry for asking more but, can you tell me how much tension the 2810 has? I'm new to flatwound strings so I have no idea. Can you give me approximate comparison? Also sorry if you cannot understand my words because I'm not an english speaker.

I have no tension number on EB flat 2810, but, it is stiffer compare to EB Cobalt 2816.
The 2810 B has less string bounce than 2816 B when you pluck it hard.
 
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