Multi-function adjustment - You can change the shape according to your needs by adjusting the barrel and nut tightness to achieve different shapes. After each adjustment, it can be locked and fixed accurately. High quality - Made of high-quality plastic to help extend product life. Small and easy to use - The product is compact and lightweight, designed to fit easily into your pocket. Features a unique shirt, pants, and belt clip design for convenient carrying and storage. Includes carpenter pen. Color: Black Material: Plastic Package Contents: 1 x Scribing Ruler, 1 x Carpenter Pen, 6 x Pencil Refill Note: The package includes only the items listed above; other products are not included. Due to light reflection and differences in display screens, the color of the item may vary slightly from the actual product. Measurement may allow an error of +/- 1-3 cm.