Lightweight and low center of mass. The HMM Plummet ballpoint pen features a low center of mass and a fishing buoy-inspired design, allowing for agile and firm movements. Made of aluminum alloy, the pen weighs less than 20g, providing a smooth feel. The pen features a twist mechanism with a smooth and durable damping structure, as well as a replaceable German-made refill. The design lowers the center of mass to expand the grip area, providing greater comfort and stability when writing. Material: Aluminum Dimensions: Ø11 * 116mm Weight: 19g Refill: SCHMIDT P900M Refill Made in Taiwan