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 1×4 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.