Contents: An assortment of 10 different colors (violet, red, orange, yellow, lime, green, light blue, blue, lavender, and black) with a 0.7 mm gel tip. Size: Approximately 15.7 cm long. Each pen incorporates two 1x4 LEGO plates fixed to its body, allowing them to be connected to each other, attached to other brand notebooks, or customized with your own figures and bricks.