Finally got a reply from Kent
"Hello,
Sorry for the delay,
Our new range replacing the badger brushes are the same size as the badger brushes.
The Infinity 3/4 :
10cm high including handle and knot 3.5 at widest part of handle 2cm at base of knot
Infinity Plus :
11cm high including handle and knot 4cm at widest part of handle just over 2cm at base of knot.
I hope this helps,
Kind Regards"
So looks like I'll have to take one for the team.
"Hello,
Sorry for the delay,
Our new range replacing the badger brushes are the same size as the badger brushes.
The Infinity 3/4 :
10cm high including handle and knot 3.5 at widest part of handle 2cm at base of knot
Infinity Plus :
11cm high including handle and knot 4cm at widest part of handle just over 2cm at base of knot.
I hope this helps,
Kind Regards"
So looks like I'll have to take one for the team.