These faber-castell jumbo connector pens are a great option when you want to draw and colour in big, bold lines. These markers have a broad tip that writes smoothly and will not bleed through most papers. These connector pens are non toxic and will wash from most fabrics. These markers have a big, broad tip. They're prefect for drawing and colouring broad lines. The ink is non toxic and will wash from most materials. The barrel shape is extra thick which offers a comfortable experience. The ink will not bleed through most papers. There are 12 markers in this pack which come in assorted colours.