MasterChinese Excellent Medium Small Script Chinese Calligraphy Kanji Sumi Drawing Watercolor Brush Set - Wolf Hair (zhong xiao kai) Made from wolf tail, especially for medium/small script (zhong xiao kai) - professional level Include: 3 brushes of various sizes. Wolf hair Elasticity is good and will not open Bamboo shaft Diameter: .27, .23, .19 inches (.5, .6, .7cm). Hair length" .78, .86, 1.02 inches (2, 2.2, 2.6 cm)