Experience effortless and elegant writing with the uni-ball ZENTO Flow Model, a pen designed for those who appreciate smooth ink flow and minimalist sophistication. With ZENTO Ink Technology, this model ensures a fluid, smudge-resistant experience, making it an ideal choice for professionals and pen enthusiasts. Key Features: Innovative ZENTO Ink Technology: Cushion Component (POA Surfactant): Acts as a cushion between the pen tip and paper, reducing writing friction by approximately 40%, allowing for an ultra-smooth writing experience. Attracting Particles: Draws ink particles together to minimize bleeding and show-through, ensuring crisp, defined lines on paper. Aluminum Grip with Anodized Finish: Features a lightweight yet sturdy aluminum grip, offering a luxurious feel and a comfortable hold. Adjustable Color Clip: The movable metal clip blends seamlessly with the pen body while adding a functional and stylish touch. Balanced Weight Distribution: Designed for stability and precision, making it perfect for long writing sessions. Specifications: Specifications Details Ink Type Water-based pigment ink Tip Size 0.38mm / 0.5mm Body Material Aluminum grip, Resin barrel Dimensions Shaft Diameter: Φ11.2mm; Thickness: 16.2mm; Total Length: 139.9mm