I made the grip for the multi-function pen "Jetstream 4&1" out of wood. The material is "Mahogany." Mahogany is one of the world's three major fine woods and is also known as "Swietenia." It's a light pink wood. Finished with several rounds of sanding and beeswax. The size is almost the same as the original rubber grip. This listing is for the grip (front section) only. The ballpoint pen body is not included.