Pentel 0.5mm Lead Refill: your ultimate solution for uninterrupted writing and sketching precision! Engineered to fit seamlessly into your favorite Pentel mechanical pencils, these 0.5mm leads deliver optimal balance between fine detail and effortless glide. Whether you're jotting down notes, drafting diagrams, or illustrating your imagination, the sturdy construction of Pentel leads guarantees durability and reliability.