Description:<br /> <br />   High quality， non-toxic， harmless， healthy environmental protection;<br /><br />   Color clear， strong adhesion;<br /><br />   Globally recognized length， diameter， the core hardness (6 h - 12 b)， and other standards;<br /><br />   With 6 h - 12 b， a total of 14 kinds of hardness level， smooth ink and smooth;<br /><br />   Pens and choose the best quality lumber;<br /><br />   Surface， water-based paint pen is safe non-toxic;<br /><br />   SV anti-flex paste technology， make the ink is not easy to break.<br /> <br />Specification:<br /><br />   Single size: 176 x7. 2 mm<br /><br />   Lead Color(s): Black<br /><br />   Barrel Color(s): Black Matte<br /><br />   Barrel Material: Wood<br /><br />   Lead Degree (Hardness): 12B10B8B7B6B5B4B3B2B1BHB2H4H6H<br /><br />   Compliance， Standards: PMA Certified Nontoxic<br />