This is a handmade ballpoint pen, featuring a twist mechanism to extend and retract the pen tip. Each pen is handcrafted, so there may be slight variations in size, weight, grain, and color. The wooden body is polished and finished with natural beeswax. ・Size: Approximately 130mm in length ・Weight: Approximately 20g ・Refill: Initial refill included Compatible refills: CROSS Oil-based ballpoint pen refill 8514 Mitsubishi Pencil Oil-based ballpoint pen refill SK 8, etc. To replace the refill, pull out the upper barrel to reveal the refill. Then, unscrew the black part that holds the refill in place. Please understand that as these are handmade items, there may be minor imperfections. The price is for the pen only. Beeswax for wooden body maintenance is available separately for 100 yen. If you would like to purchase it, please let me know in the comments.