These premium bic velleda drywipe markers contain liquid ink technology for long lasting easy to erase vibrant colours the medium 42mm bullet tip writes a clear and precise 22mm line width ideal for classrooms presentations meetings displays and more the alcohol based ink is low odour and comes in 4 bic fashion colours pink purple indigo and blue this wallet contains 4 markers premium drywipe markers liquid ink technology is long lasting and easy to erase medium 42mm bullet tip