This is a wooden mechanical pencil, carefully crafted by my middle school son. It's a single piece that allows you to feel the warmth of natural wood. Due to being handmade, the wood grain and color will differ for each pencil. Lead diameter: 0.5mm Length: Approximately 14.5cm Material: Japanese Pagoda Wood (Enju) As this is a handmade item, there may be small scratches or variations in color. Please understand this before purchasing.