The Pentel Graph Gear Drafting Pencil 1000 (0.9mm) – Yellow is a mechanical pencil that is designed for use in technical drawing and drafting. It has a yellow plastic body with a knurled grip for comfortable and secure use. The pencil uses 0.9mm lead and features a built-in lead advancement mechanism that allows for precise and accurate drawing. The pencil comes with a replaceable eraser under the push button. Overall, this pencil is a high-quality and reliable tool that is ideal for artists, architects, engineers, and other professionals who require precise and accurate drawing and drafting.