Respuesta :
The heavier part is the bristles part.
What are bristles?
High quality brushes are usually equipped with brass or copper alloy ferrules and have the highest handle grip, usually with double or triple crimping. Ferrules are important because if they do not fit properly, they can fall off or the ferrules can come off the handle.
Bristles Types: Brushes come with two basic types of bristles (sometimes called filaments). Natural and synthetic bristles. Natural hair is made from animal hair, such as pig and badger hair.
The brush ferrule is a metal band that connects the bristles to the handle, and the crimp is part of the ferrule that attaches it to the handle.
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