MasterChinese Chinese Calligraphy/Kanji/Sumi Drawing/Watercolor Brush (Wolf, Medium Size) for Beginners with Introduction A great *practice brush for beginners*. If you're a pro looking for exquisite brush, this is not for you (as can be see from the price) Include: One wolf hair brush. Wooden shaft. Comes with a brief introduction. Brush diameter 1cm (.39 inch), hair length 4.3 cm (1.69 inch) Works for watercolor, sumi drawing, chinese calligraphy. Hair will not fall or open Lab tested to ensure safety for children/adult. Beware of counterfeit items Press the brush hair, relax the hair and put it under running the water (see photos). <span class="a-text-bold"><span class="a-text-italic">Or </span></span>immerse in warm water. Let it sit for at least 3 minutes. Wash away any falling hair. <span class="a-text-bold">Discard the plastic cap.</span> Never use it again. The moist collected inside the plastic cap will damage the hair. For storage: best is to hang the brush when not used. Wash after use to remove the ink in the hair. Before each use, first wet the bristle with water (to moisten it), dry all excess water, then dip it in the ink. This brush is a good brush that won&#039;t open when used <span class="a-text-italic">Lab tested </span>to ensure safe materials for users