23020 CAPYBARA Vol.2 10-COLOR RETRACTABLE BALL PEN-36 10 Color Options with Retractable Feature. $2, $72 a display of 36 pens. BCmini pens can be used for varies types of writing and illustration. Fine-tip pens let you fit more writing onto every page and card. They make your handwriting neater by creating sharper, more consistent lines.