Thank you for viewing! I have customized the rubber grip of a Jetstream 4&1 multi pen with a black water buffalo horn, a material often used for name seals. Enjoy the unique feel of the smooth, yet non-slip surface that adheres to your fingers. Polished finish. This listing is for the metal grip and wood parts only. The pen body is not included. No warranty is provided. The item will be wrapped in bubble wrap and shipped via Nekopos. Shipping will be on weekends due to my schedule, so please allow some time. If you understand this is a handmade item and are interested, this includes shipping. About Black Water Buffalo Horn: I used the highest grade of black water buffalo horn, generally referred to as "dye-free," which is also used for name seals. This high-quality part does not require dyeing like other black water buffalo horns and has an attractive, luxurious black sheen. Black water buffalo horn is mainly composed of protein and is susceptible to drying out. To maintain it, store it in a case and occasionally wipe it with paper soaked in oil. Thank you for viewing. As a stationery enthusiast, I love Jetstream and Dr. Grip 4&1 pens. I dislike the deterioration of the rubber grips, so I started making my own using scrap wood from the famous trees I used to collect. 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, studies, tests, certification exams, and entrance exams. If you like handmade wooden pen shafts, or if you like the works of wooden pen workshops such as Craft A, Nohara Kougei, Koubou Kusabi, Kobuta Koubou, 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 precious woods such as Karin瘤 (Karin burl), Karin Kouhaku (Karin red and white), Snake Wood, Pink Ivory, Desert Ironwood, Kurogaki (black persimmon), Kurogaki Kujaku-moku (black persimmon peacock grain), Kouki (red wood), Ebony, Rosewood, Sandalwood, Palo Santo, Briar, Rosewood, Satine, and acrylic resin. #jnsm