Item Type: Double Line Pen Color: 12 colors Specification: 12Pcs/box Line Width: Approx. 1 ~ 2mm / 0.04 ~ 0.08in Tip: Fiber tip Ink: Water-based environmentally friendly material Pen Size: Approx. 13.2cm / 5.2in Instructions for Use: 1. Before using, shake the pen body up and down several times. 2. Pull the cap and nib upward, and press for 3 to 4 seconds. 3. Press the pen nozzle down several times until the ink oozes out. 4. After use, close the cap tightly and lay it flat. Package List 12 x Pen Manual measurement, there is a slight error. 1The nib adopts a fiber nib, which makes the ink flow smoothly and it is more smooth to use. 2The double-line outline stroke effect and the color pressing line have a cool effect. 3The cap design with air holes is safer, with strict quality control and quality assurance, high safety factor, can be used with peace of mind. 4Wide range of uses, can be used for greeting cards, hand account DIY, personalized posters, paintings, etc. 5With 12 colors pens, can meet your use and replacement needs, very practically.