Every colour you could need is included in this premium quality collection of Helix whiteboard markers. Perfect for use on white boards at home, in meetings or in the classroom. These markers come in an assortment of vibrant colours and use high quality quick drying low odour that is dry wipe-able using a cloth or white board eraser even if left after several days. These pens also come with a mix of chisel and fine bullet tips for all of your board writing needs.. Includes 4 fine bullet tip pens with 1.5mm line width. Includes 14 chisel tip pens with 1.1mm/4mm line width. Quick drying low odour ink. Dry wipe-able even after several days. Approximate Dimensions (mm) H 236 W 315 D25