pencils with square tube made from paper the lead will not deviate healthy for people smooth good-looking pencils with square tube1,lead hardness:HB2,pencil rod lengthy:174mm3,pencil rod diameter:7.2mm4,pencil lead diameter: 2.0mm5,Lead material: natural graphite ,clay, tallow6,pencil rod no print,you can decide square paper tube artwork7,pencil rod one end-cutting, the other top sharpened8, ...