MasterChinese Chinese Calligraphy / Sumi Drawing /Kanji Brush - Large (Goat Hair) Large Brush Fine Goat Hair Diameter: 2.25 cm (.89"). Hair length: 11cm (4.3"). Total length: 37cm (15"). Weigh 75g (2.6 oz) Excellent brush - professional level See size comparison with a CD in the photo (NOT included)