This is a wooden mechanical pencil, meticulously 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 vary from piece to piece. Lead diameter: 0.5mm Length: Approximately 13cm Material: Bocote As this is a handmade item, there may be small scratches or variations in color. Please understand this before purchasing. For those purchasing as a gift, such as for入学祝い (entrance celebrations), we will wrap and ship the item.