Artline ETX Stix Brush Connecting Pens - Pack 16 SAFE: Suitable for use by children  easy to hold, non toxic, odourless and non bleed! PERFECT: Ideal for hand lettering, adult coloring books, sketching graphics, designing and calligraphy. Used by professionals and enthusiasts alike. VERSATILE: Using the flexible nylon 2.0mm fiber brush tip create your mark from bold strokes to thin lines simply by adjusting pressure! Use for everything from fine art and journalism to doodling and illustrations.VERSATILE: Using the flexible nylon 2.0mm fiber brush tip create your mark from bold strokes to thin lines simply by adjusting pressure! Use for everything from fine art and journalism to doodling and illustrations. VIBRANT: Create bright colourful strokes with the vibrant range of up to 16 colors including black. CREATIVITY: Connect the pens together easily like blocks to create all sorts of shapes. Lateral, vertical, cross-shape or bundled; let your imagination run wild and see what you can make.