Edding e 140 s ohp marker 4x set 0 3mm black red blue edding 04140 4000 edding e 140 s markers are especially made for writing on over head projector ohp transparencies as well as glass slide frames etc the markers have round tips dispensing brilliant coloured permanent waterproof ink edding 04140 4000 e 140 s ohp marker 4x set 0 3mm black red blue and green