Thanks for looking at our selection of Montana Paint & Ink Pens , the description for this product will follow along shortly. in the meantime, if you find yourself with a question about this product, anything at all, like materials or sizing or just plain old anything please use the contact form to speak to us, we answer all emails within the hour during office hours, or even just live chat us. If you don\'t find what you are looking for with this piece of Montana Paint & Ink Pens then you really should browse the rest of the website, we have a pretty good selection of clothing, footwear, accessories, and a few other selections of interest. Montana Black - Empty 8mm Round Tip Marker. The 8mm empty round tip marker is a another new product to add to the range of Montana Black products we carry. Shown here is the 8mm empty round tip marker. This pump action marker has the same valve system as any other marker and has a round 8mm round tip. Able to store up to 20ml of ink, it is refillable and has replacable nibs.