Sharpdraw Mechanical Carpenter Pencil - Carbon Fiber Lead for Razor Sharp Lines Carbon fiber pencil lead for razor sharp lines. Features a graphite pencil-blade reinforced with carbon-fibers, real wood handle provides wood feel and comfort, stainless steel nickel plated metal track, automatic lock-in-place slider button design, and rugged spring steel pocket-clip. Keep your work accurate with perfect measuring and marking. Marks are razor-thin for perfect measuring. Provides the industry's first carbon fiber pencil blade for marking tasks.