Sticky Thumb 2-Way Glue Pens are both repositionable and permanent! The glue is blue when wet, but turns clear when dry! For a repositionable application, apply glue lightly and place after adhesive is dry. For a permanent application, place immediately after applying adhesive and allow to completely dry. Their versatility makes 2-Way Glue Pens a must-have for any creative! This package includes one 2-Way Glue Pen with a Jumbo Tip.