BAILANku Double Line Outline Markers, Outline Marker Set, New Glitter Gel Double Line Outline Pen, Sparkle Markers Colorful Art Pens for Writing, Scrapbooking, Coloring and Greeting Cards Feature: Length: 13.5x1.1cm/5.31x0.43inch Type: 8/12/20 colors Material: plastic Function: flashing, long lasting Purpose: writing tool Package Contents: Set of pens(8/12/20 colors) BAILANku Double Line Outline Markers, Outline Marker Set, New Glitter Gel Double Line Outline Pen, Sparkle Markers Colorful Art Pens for Writing, Scrapbooking, Coloring and Greeting Cards 【Unique Stunning Colors】This glitter gel pen set includes various unique stunning colors, The glitter pens add a sparkling and shiny to your artwork, making it stand out. 【Quality and Smooth Ink】The pen is made with smooth and flowing ink, ensuring your writing stays in place and won't smudge or fade. 【Art Pens for Drawing】 Perfect for coloring, drawing, doodling and writing, these terrain-hill outline marker sets will help you unleash your creativity and add sparkle to your artwork. 【Easy to Use】These outline marker pens simply shake it to ensure that the ink is fully mixed. Then take the cap off and press the tip onto your surface. Keep repeating this in a pumping action a few times to activate the ink until it starts to flow and circulate.