Two main reasons why radial range are better:
1. bristles are fewer yet more compact
2. rinse bars give out a curvature effect
Sorry to press for more details, I don't understand what this means in practice - how much faster are they than a typical wfp brush - do they get stuck on stuff off or is it rinsing - and why?
To appreciate the benefits of using it reach-it brushes which improve the speed of cleaning windows it's no good using 5mm internal pole hose and 6mm internal microbore hose otherwise you will be running your pump flat out draining the battery and still not have a decent flow of water.
I use a lightweight flat hose which has a 10mm internal hose with 12mm external hose on my electric hose reel. I use 8mm internal pole hose with 10mm external on every pole, this gives ample water to appreciate a high flow of water running a pump on a setting of 64 on a flow controller.
Bristles on Radial brushes are so compact it prevents the water running down through the bristles, it sits above the row of bristles and runs around the curved part of the brush when slightly tilted at an angle meaning a non broken surface tension to the edge of the window frame even when rubber seals repel the water using other brushes. Cleaning hydrophobic glass is a joy using these brushes. The brushes are built to last much longer than anything else and doesn't deform, value for money in the long run.
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