The Basic Sketch Pen Set by Silhouette contains 8 coloured pens that have been specifically designed to work with select silhouette machine to transform any digital design into a masterpiece.This set has been crafted to work with the Silhouette Cameo (All Versions), Silhouette Portrait (All Versions) and the Silhouette Curio. To use, just remove the ratchet blade and secure the silhouette pens directly into the blade holder - no adapter is needed for this. From there, the machine will draw your desired design rather than cut it. The colours included in this set are red, orange, yellow, green, blue, purple, pink and black.Features & Benefits Set contains 8 pens Colours: Red, Orange, Yellow, Green, Blue, Purple, Pink and Black Pen Tip Type: Rollerball Compatible with the Silhouette Cameo (All Versions), Silhouette Portrait (All Versions) and the Silhouette Curio only Specification Pen Tip Size: 0.5mm Width (Fine)