Thank you for viewing! I have customized the rubber grip of a Jetstream 4&1 multi-pen with Brazilian Rosewood. It has a composite finish using glass coating and beeswax wax. This listing is for the metal tip and 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. If you understand that this is a handmade item, and considering the shipping cost, how about it? "Brazilian Rosewood" is also known as "Jacaranda" and is considered the highest grade of rosewood. The wood surface ranges from reddish-purple to dark brown with purplish hues, and has black-purple stripes. It is dense and glossy, with little warping and excellent hardness, making it suitable for European court furniture, interior decoration, musical instruments such as guitars, wooden chess sets, and lathe work for dishes and bowls. Currently, "Brazilian Rosewood" is a particularly rare wood, designated as an endangered species by the Washington Convention, and its export is prohibited. 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 that I had collected. You can customize these practical pens to your liking, just like changing your smartphone case. I hope that the wooden pen shafts and wood parts I create can be of some help in your daily work, study, tests, certification exams, and entrance exams. If you like handmade wooden pen shafts, or if you like the works of wooden pen shaft workshops such as Craft A, Nohara Kougei, Koubou Setsuri, Kobuta Koubou, etc., or if you like multi-function pens such as Jetstream 4&1, Dr. Grip 4&1, and Pure Malt Premium 2&1, how about it? I create them using famous woods such as Karin Burl, Karin Red and White, Snake Wood, Pink Ivory, Desert Ironwood, Black Persimmon, Black Persimmon Peacock Grain, Red Sandalwood, Ebony, Rosewood, Sandalwood, Palo Santo, Briar, Rosewood, and Satine. #jnsm