John Adams Blopens Super Activity Workshop, Create fantastic airbrush pictures with amazing Super Activity Set, Use the stencils provided or create your own unique pictures, Place your paper in the centre of your workstation, add your stencil, blow through the pen and watch your drawing appear, Blow lines or circles creating different effects, or use the BLO pens as normal pens to add extra detail. You get (Includes 13 Blopens & 16 re-useable stencils.