The Faber-Castell Ecco is a disposable fibre-tip pen ideal for sketching, drawing and writing. The waterproof and lightfast black pigment ink and long metal-clad tip ensures a controlled line and is suitable for use with rulers and stencils. The barrel has a comfortable ergonomic grip. This wallet set contains four pens 0.1, 0.3, 0.5 & 0.7mm.