SAKXSDK0124 Micron Pen,Waterproof/Fade Resistant,0.25mm Point,Purple Made with archival - waterproof and chemical proof - permanent - pigment based They will not smear or feather when dry and will not bleed through most papers They are great for graphic art - scrapbooking - archival recording Pen & ink illustrations - rubber stamps and cartooning PURPLE .25MM