I purchased this new from Horosuke of Matsukasa-do on Mercari and have only used it a few times. I will include the popular Jetstream refill. Maple burl processed into purple stabilized wood. It has become a beautiful ballpoint pen. The hardware is a click type. The clip is not fixed in position and can be adjusted by disassembling it. Maximum diameter: Approximately 12mm Length: Approximately 142mm Weight: Approximately 30g The refill is Parker G2 standard. There are many types available, from genuine products to compatible products, and the price of the refills varies widely (1000 yen - 140 yen per refill). Jetstream refills can also be used. Please note that this is a handmade item, so there may be some imperfections. Thank you for your understanding. Type: Pen/Writing Instrument