Staedtler - Wallet of 10 Double Ended Fibre Tip Pens Wallet containing 10 double-ended fibre-tip pens in assorted colours Product information Stable, pressure-resistant tip Ventilated cap conforming to ISO 11540 and BS 7272-1/2 PP barrel guarantees long service life Washes easily out of most textiles Line width fine tip approx. 1.0 mm, line width broad tip approx. 3.0 mm Ref : 320 NWP10