I've customized the grip of a Dr. Grip 4&1 with Golden Sandalwood. It can also be used for the Frixion Ball 3 Metal. It has a composite finish of glass coating and beeswax wax. This listing is for the grip parts only. Please note that the metal tip and the pen body are not included. Only the parts in the last photo are included. I am not considering discounts. There is no warranty. It will be shipped via Nekopos. Shipping will be on weekends due to my schedule, so it will take some time. About Golden Sandalwood: <Bocote> A wood of the family Fabaceae, also known as "Yellow Kingwood" or "Golden Sandalwood." Its properties are that the wood is moderately hard and easy to work with, strong and impact-resistant, and the surface has an oily feel and finishes beautifully. It is used for furniture, Buddhist altars, musical instruments, crafts, and billiard cues. Thank you for viewing. As a stationery enthusiast, I love using Jetstream and Dr. Grip 4&1 pens. I disliked the deterioration of the rubber grips, so I started making them for myself using leftover pieces of fine wood that 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, studies, tests, certification exams, 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 Kusabi, 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 create them using fine woods such as Karin瘤 (Karelian burl), Karin Kouhaku (Karelian red and white), Snake Wood, Pink Ivory, Desert Ironwood, Black Persimmon, Black Persimmon Peacock Grain, Red Sandalwood, Ebony, Rosewood, Sandalwood, Palo Santo, Briar, and Rosewood. #jnsm