Multi-function ADJUSTMENT - YOU can change shape according to your own needs, as long as changing the barrel and nut tightness can achieve different shape needs. After each adjustment, it can be locked and fixed to accuracy.High Quality - Made of high quality plastic to help extend the life of .Small and easy to use - The product is small and light enough to fit right into your pocket. Unique shirt pants belt clip design, easy to carry and storage With the carpenter penColour:BlackMaterial:plasticPackage Contents:1 x Scribing Ruler1 x carpenter pen6 x pencil refillOnly the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.