This collection of 6 water based ink pens is perfect for any crafter who wants to add a bit of colour to their projects. Each pen has 2 nibs, one chisel tip and the other brush tip. All colours are blendable when you add water to them with a paint brush. The inks are odourless and acid free, so are perfect for scrapbooking too. These professional quality pens come in a clear acrylic box and have a clever interlocking system so that you can connect other box sets from this collection all together.