Have WDS got anything suitable?
What does the other side of the brush holder clamp look like ? Are you hoping for a brush head as well ?
Which bit do you want? The brush, the clamp or the bracket?
From your comments about the router brush, I assume it's the brush you want. This any good?
I searched 'brush strip' on google, seems to be plenty of suppliers, bristle lengths, thicknesses etc
look at door brush @knighty
Two long bristle with handles wall paper pasting brushes side by side in a clamp perhaps or one of these B&Q brushes cut along it's length , the the halves butted up and clamped etc etc.I can sort my own bracket etc. out (probably 3d print)
the plastic brush head bit would be a bonus
I found some flexible ones, like you'd make a brush to go around a router to trap sawdust etc.. ordered that to give it a try but had my fingers crossed for something better






