Show-me Medium Tip Slim Barrel Drywipe Marker Black (Pack 800) - SDP800 DDShow me drywipe markers have been designed specifically for education, and theyre trusted by thousands of schools around the globe. Each pen benefits from: a slim barrel with easy fit lid, an extra hard nib that will not easily splay out, and nib stop that prevents the tip from being pushed into the barrel. They're safety optimised with low odour, xylene free ink, safety airflow caps, and boast a 72 hour cap off time to prevent drying out. This EXTRA