I've customized the grip of a Pure Malt 4&1 pen with a Dutch buffalo horn. I made it from Dutch buffalo horn, which is used as a material for seals. Enjoy the unique feel of the shiny surface that doesn't slip and adheres to your fingers. Since Dutch buffalo horn is a translucent material, the metal parts underneath may be visible. The pen is new. I am not considering discounts. There is no warranty. The box will be folded and shipped via Nekopos (a Japanese delivery service). Shipping will be on weekends due to my schedule, so it will take some time. For those who understand handmade items, how about it, including shipping? Dutch Buffalo Horn: Among buffalo horns, this is a particularly hard and resilient material, known as a superior material for seals. The name doesn't originate from the Netherlands; it was exported to the world with the Netherlands as a collection point. Besides seals, it is used worldwide as a material for clothing buttons and combs. Dutch buffalo horn is a material with natural black patterns (Fu). Buffalo horn's main component is protein, and it is characterized by its weakness to dryness. When storing, you can keep it longer by putting it in a case and occasionally wiping it with paper soaked in oil. Thank you for looking. I love stationery and use Jetstream and Dr. Grip 4&1 pens. I dislike the deterioration of the rubber grips, so I started making them for myself 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 handmade wooden pens and wood parts can be of some help in your daily work, studies, tests, certification exams, and entrance exams. For those who like handmade wooden pens, those who like the works of wooden pen workshops such as Craft A, Nohara Kougei, Koubou Kusabi, and Kobuta Koubou, 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 make them using famous woods such as Karin Kobu, Karin Kouhaku, Snakewood, Pink Ivory, Desert Ironwood, Kurogaki, Kurogaki Peacock Grain, Beniki, Ebony, Rosewood, Sandalwood, Palo Santo, Briar, and Rosewood. #jnsm