The Artline 541T whiteboard pen has two nibs in one marker giving added versatility and convenience. Choose from either a 0.4mm polyacetal resin tip or a 1.0mm acrylic fibre tip. These whiteboard pens contain a safe Xylene free alcohol based solvent ink which is non offensive with a low odour. Ideal for use on laptop whiteboards. Set with 8 colors in a plastic wallet.