... : Hi-polymer pencil leads, Clay pencil leads. (5) Color of mechanical pencil leads: Black, Red, Yellow, Blue,Green, Purple, Pink, ... White color ( As below shown.) (6) Our mechanical pencil leads: Were Smooth writing (Please check below writing line ... . ( It depends on your requested packaging) (9) Certification of mechanical pencil leads: Tested by EN-71 standard. (10) Customer's ...