Keep personal data protected with this Artline Secure Permanent Marker. This marker pen has special redacting ink that permanently obscures sensitive and private information, making it a must have product with the introduction of GDPR.This marker has a 4.0mm writing width and a chisel tip, ideal for easily covering information within mail and documents with one stroke.. Data protection acrylic fibre tip. Obscure private information permanently . 4.0mm writing width. Chisel tip. Approximate dimensions (mm) H 145 W 110 D 40