Pentel Mechanical Pencil, Einstein Lead

Product Overview Product Name: Pentel Ain Stein Mechanical Pencil Lead  Brand: Pentel  Type: High-Strength Mechanical Pencil Lead Refill Specifications & Features Feature Details Model Series Ain STEIN Series Lead Specs • Diameter: 0.5mm • Hardness Grade: F (Firm/Fine — sits balanced between HB and H for crisp, smudge-resistant lines) • Length: 60mm • Quantity: 40 leads per case Core Technology Reinforced silica frame structure ("STEIN" framework) that dramatically increases break resistance while maintaining smooth, dark lead density Case Design Sleek blue hard plastic case featuring a twist-or-slide dispensing mechanism designed for smooth, single-lead access and spill prevention Primary Use Ideal for daily writing, academic note-taking, precision drafting, and standardized test taking