STAEDTLER 315BL - Non-permanent pen M / 1.0 mm / blue

Universal pen for overhead projection and almost all surfaces
• Can be wiped off transparencies using a damp cloth
• Water-soluble ink
• Quick drying
• Excellent colour brilliance
• With clip
• Barrel and cap made from PP for a guaranteed long service life
• Airplane-safe — automatic pressure equalisation stops the pen leaking on aeroplanes ...