Berol Handwriting Pen Clip Cap Medium Nib 0.6mm - Black (Box of 12) Features a hard wearing plastic tip which has a slight resistance to paper giving more controlled letter formation Ventilated safety cap Non Fading, washable ink (will wash out of most fabrics and hands and is removable on most porous surfaces) Long Writing Length Resistant medium nib  Line Width 0.6 mm Clip cap version