The warmth of the wood is like you are holding a pencil. Manufacturer: OHTO; Model Number: NBP350P Nachiyu; The short size with clip makes it perfect for notebooks; An oil-based ballpoint pen made of natural wood. Ink color: black; Shaft color: natural; Ball diameter: 0.02 inches (0.5 mm); Nib: Needle tip (needle point); Material: Shaft: Natural wood; Clip: SK wood, Base and knock part: Brass