Leto Twin-Tip Alcoholic Acrylic Colour Sketch Markers have a triangle barrel and two-ended markers One side has a broad Cut/Chesil 6.2 mm tip for colouring a large wide area and One side has a fine Round/Bullet 1.0 mm tip for sketching & outlining. Bright colours. Quick Drying. High-quality fiber material tips. It can be used for painting, Art design, marking, writing, furniture colour changing, etc. For best results, use special marker paper. The markers come in a Comfortable Plastic case with a handle, lockable that is easy to carry. Available in 12, 24, 48 and 60 Assorted colours.