Why the BT-4002 Brush?
the BT-4001 is also very usefule brush for car room. and office (for computer etc....)
the BT-4002 is longer and biger than BT-4001 brush.it is better for use in cleaning process. because the holder is longer. and hair also most same.
Car Wash Cleaning Car Brush Dust Brush Cleaning Louver Air Conditioning Interior