Set of 3 Different Size Chinese Calligraphy Brushes for Beginners,Wolf Hair Wolf hair, wooden shaft Three sizes: 1. Diameter 0.9cm (.35"), hair length 4 cm (1.57") 2. Diameter 1.2cm (.47"), hair length 4.5cm (1.77") 3. Diameter 1.5cm (.59"), hair length 5.5 cm (2.16") Hardness: extra fine, medium, large Excellent brush for beginners to the pro Brush head has just the right degree of firmness and flexibility