Edding retract 12 retractable whiteboard marker pens edding 4 12 4 the edding retract 12 is a retractable whiteboard marker pen with a push button mechanism for single handed operation the tip is revealed by simply pressing the push button at the end of the marker and retracted by pressing the catch in the clip or by raising the clip slightly a retractable seal system prevents the marker from drying out when the tip is retracted edding 4 12 4 retract 12 whiteboard marker assorted 4pk