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
$6.99 - $19.99
$6.99 - $19.99

2pc- 24pieces Wolf Hair Brush Chinese Calligraphy Painting Ink Sumi B024
$7.49 - $12.99
$7.49 - $12.99

XL Badger Hairs 石獾 Brush Premium Calligraphy Painting Chinese Sumi-e Produce B025
$41.99
$41.99
Sold out

1 Piece Mixed Hairs Red Hairs Bamboo Shaft Brush Fine Line Script Detail Sumi e B020
$4.99 - $7.59
$4.99 - $7.59

Weasel Tail Hairs Rosewood Shaft Premium Brush B026
$27.99 - $83.99
$27.99 - $83.99

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
$9.79 - $39.79
$9.79 - $39.79

On Sale
On Sale
Wolf Weasel Horse Hair Brush Wood Shaft Calligraphy Painting Sumi-e Chinese Japanese B031
$12.69 - $33.99
$12.69 - $29.99

Weasel Tail Hairs Carved Solid Woods Shaft Brush Set /w Gift Box B032
$23.99 - $73.99
$23.99 - $73.99

On Sale
On Sale
Sumi-e Calligraphy Painting Brush Badger Hair Wood Shaft B033
$14.99 - $86.99
$9.99 - $86.99

On Sale
On Sale
Various Hairs Ebony Shaft Grape Eyeball Peony Brush B034
$22.99 - $72.99
$22.99 - $69.99
Sold out

On Sale
On Sale
No.1 Brand Shuangyang 雙羊 Fine Line Script Rabbit Goat Mixed Hairs Brush B010
$17.49
$15.99
Sold out

On Sale
On Sale
Sable Hair Chinese Hard Brush Bamboo Shaft B035
$20.50 - $62.99
$20.50 - $59.99

On Sale
On Sale
Weasel Hair Brush Wood Shaft Calligraphy Painting Sumi-e Chinese Japanese B039
$12.49 - $33.99
$12.49 - $29.99

One Piece Wooden Brush Gift Box
$15.99
$15.99

One Piece Brush Gift Box
$6.99
$6.99