Among hairs from weasels' tail, under jaw, and fore breast, which are widely used to produce wolf hair brushes, the tail parts are the best and usually for the high end product. Some low price wolf hair brushes are made from mount horse hairs, please read the retail.
Wolf brushes are relative stiff.
Some suggestion but not the definition depending on each user's habit and skills
Painting: Good for Calligraphy and signature for painting, Bamboo, orchid, petals and strokes. Small/script size can be used for ribs of a leaf.
Branch in the method of double sketch/ bone style, such as plum tree. (雙鉤法畫梅幹).Bill of bird. Stone, mountain, sketch in landscape.
Calligraphy: Good for Regular Script, Official Script 楷書,隸書
Wolf brushes are relative stiff.
Some suggestion but not the definition depending on each user's habit and skills
Painting: Good for Calligraphy and signature for painting, Bamboo, orchid, petals and strokes. Small/script size can be used for ribs of a leaf.
Branch in the method of double sketch/ bone style, such as plum tree. (雙鉤法畫梅幹).Bill of bird. Stone, mountain, sketch in landscape.
Calligraphy: Good for Regular Script, Official Script 楷書,隸書
Wolf Hairs and other Hard Hairs

Wolf Weasel Hair Brush Detail Outline Script Gong Bi Sumi-e Painting Calligraphy B021
$7.99 - $22.99
$7.99 - $22.99

Weasel Tail Hairs Rosewood Shaft Premium Brush B026
$27.99 - $56.99
$27.99 - $56.99

On Sale
On Sale
Weasel Wolf Hair Brush Chinese Japanese Calligraphy Painting Ink Sumi-e Water Color B027
$7.99 - $14.99
$5.99 - $14.99

No.1 Brand Shuangyang 雙羊 Wolf Hairs Brush B028
$16.99 - $89.99
$16.99 - $89.99

Rabbit Hair Chinese Hard Hairs Brush B029
$7.99 - $12.99
$7.99 - $12.99

Wolf Weasel Hair Brush Wood Shaft Calligraphy Painting Sumi-e B031
$12.99 - $34.99
$12.99 - $34.99

On Sale
On Sale
Sable Hair Chinese Hard Brush Bamboo Shaft B035
$26.50 - $69.99
$26.50 - $54.99

One Piece Brush Gift Box
$8.99
$8.99

On Sale
On Sale
Weasel Hairs Brush Sumi e Bamboo Shaft Brushes B041
$18.99 - $59.99
$18.99 - $52.99

On Sale
On Sale
Weasel Hairs Brush Sumie Wood Shaft Brushes B044
$16.99 - $47.99
$16.99 - $41.99