These pens feature two tips: a high-quality flexible, nylon fiber brush tip, and a fine bullet tip. The resilient nylon brush retains its point, stroke after stroke. The ink is water-based and blendable: use two colors together or use the colorless blender pen. The pen tips self-clean after blending so there is no messy clean-up. Use these pens for rubberstamping, hand-lettering, doodling, journaling, and more. The ink is acid free, Non-Toxic, and odorless. This package contains ten pens (9 colored, 1 colorless) all in convenient storage pouch. Pouch measures 8 by 5-1/2in. Available in a variety of color schemes: each sold separately. Conforms to ASTM D 4236. Imported.