CreoPop Rechargeable 3D Printer Pen with Ink Accessory Bundle (1)CreoPop 3D Printer Pen (1) CreoPop Ink 3 Pack - Regular Cyan, Orange & Red (1) CreoPop Ink 3 Pack Glow-in-the-Dark Cyan, Orange, Yellow (1) CreoPop Ink 3 Pack - Regular Black, Blue & Green Photopolymers solidify using built in LEDs