Brushes are chosen by filament stiffness against the surface, not by size. Ultra-soft synthetic for coated wheel faces, piano-black trim and badges; boar’s hair for general interior work; stiff nylon for tires and wheel wells.
The test is simple: if the brush feels scratchy against the back of your hand, it does not belong on paint.
Brushes
Brushes are chosen by filament stiffness against the surface, not by size. Ultra-soft synthetic for coated wheel faces, piano-black trim and badges; boar’s hair for general interior work; stiff nylon for tires and wheel wells.
The test is simple: if the brush feels scratchy against the back of your hand, it does not belong on paint.
![Autofiber [Barrel Blade] Wheel Brush Tool](https://shieldworks.ca/wp-content/uploads/2026/09/sw-afb-barbla-std-300x300.png "Autofiber [Barrel Blade] Wheel Brush Tool")
