Thank you for viewing. I have modified the rubber parts of a Jetstream 4+1 multi-pen's tip section into stabilized wood. This listing is for the metal tip section and the wood parts only. The pen body is not included. There is no warranty. It will be wrapped in bubble wrap and shipped via Nekopos. Shipping will be on weekends due to my schedule, so it will take some time. For those who understand handmade items, and with shipping included, how about it? Stabilized wood is a hybrid material, both artificial and natural, made by impregnating natural wood, such as maple, with a special resin to improve strength and prevent expansion and contraction. It is completely dyed throughout, so the same color can be enjoyed even after carving. Also, due to the effect of the resin, a beautiful luster appears when polished in the final finish. Thank you for viewing. I love stationery and use Jetstream and Dr. Grip 4&1 pens. I dislike the deterioration of the rubber, so I started making them for myself using scrap wood from famous trees I had collected. You can customize these practical pens to your liking, just like changing your smartphone case. I hope that my wooden pen shafts and wood parts can be of some help in your daily work, study, tests, qualifications, and entrance exams. For those who like handmade wooden pen shafts, those who like the works of wooden pen shaft workshops such as Craft A, Nohara Kougei, Koubou Setsuri, Kobuta Koubou, etc., and those who like multi-function pens such as Jetstream 4&1, Dr. Grip 4&1, and Pure Malt Premium 2&1, how about it? I use famous woods such as Karin瘤 (Karelian burl), Karin Kouhaku (Karelian red and white), Snake Wood, Pink Ivory, Desert Ironwood, Kurogaki (black persimmon), Kurogaki Kujaku Moku (black persimmon peacock grain), Beniki (red wood), Ebony, Rosewood, Sandalwood, Palo Santo, Briar, Rosewood, Satine, and acrylic resin. #jnsm