Blu Bento Water Brush Duo With Travel Case (2 Sets: 2 Small And 2 Large Brushes, 2 Carrying Cases). Best For Watercolor Paint, Ink, and Blending Watercolor Pencils. (Self-Moistening Calligraphy Pen) Assorted brush sizes: each set includes 1 LARGE tip (~ equal to size 4 or 6 brush) and 1 SMALL tip (~ equal to size 2 brush) water brush (aka. self-moistening brush pens). Use the small brush for fine detailing. Comes with a convenient little storage box/carrying case - perfect for travel! Snap it shut, throw it in your art bag, and go! Use for watercolor and gouache painting, sketching, calligraphy, lettering, coloring, blending, journaling, scrapbooking, and painting with ink. Easy to fill, clean, and use. Works great with student or artist grade paint, ink, watercolor pencils, or watercolor crayons. We only recommend that you fill the water brush reservoir with water or water-based ink. Flat barrel design prevents the brush from rolling away while you're working. 1-set (2 brushes + 1 case) or 2-set (4 brushes + 2 cases) options available  save when you buy in bulk!