Dual-Tip Acrylic Paint Markers: Our black acrylic pen has two types of tips: 1mm fine tip and 1-5mm round tip. 1mm fine tip for outlining and fine line work, 1-5mm round tip for large area coloring and painting Direct Use: This paint marker is upgraded, you can use it directly, without shaking and pressing. The ink is smoother, dries faster. Note: When you are not using the pen, tighten the cap and place the pen horizontally Premium and Safe Markers: Tesquio acrylic paint sets are made of premium inks. They are safe without strong odor and can be used both indoors and outdoors Suitable for Diverse Surfaces: Tesquio paint markers can work well on variety of surfaces. Such as stone cardboard, fabric, wood, ceramic, plastic, glass metal, etc. The ink has a strong covering power that will keep your work fresh for a long time You can be an artist, designer or creator.