Ruột chì Staedtler Mars Micro Carbon 250- nét 0.3/0.5/0.7/0.9mm

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Ruột chì kỹ thuật MarsMicro Carbon 250 03-B/HB nét 0.3mm với 2 độ cứng B, HB

Ruột chì kỹ thuật MarsMicro Carbon 250 05/... nét 0.5mm với 5 độ cứng: 2H, H, B, HB, 2B

Ruột chì kỹ thuật MarsMicro Carbon 250 07/... nét 0.7mm với 3 độ cứng B, HB, 2B

Ruột chì kỹ thuật MarsMicro Carbon 250 09-B/HB nét 0.9mm với 2 độ cứng B, HB




Art. no. 250 05-... (degree)

  • Mechanical pencil lead for use on paper and drawing card
  • Smooth-gliding lead
  • Jet black lines
  • Highly flexible - extremely break-resistant
  • Easy to erase
  • ISO colour coding
  • Suitable for use with all mechanical pencils
  • Easy "12-a-go" refilling for Mars micro 775 and graphite 779 05/07
  • Up to 7 degrees: 2B, B, HB, F, H, 2H, 3H
  • 5 line widths: 0.3 mm, 0.5 mm, 0.7 mm, 0.9 mm and 1.3 mm
  • 12 leads per tube (1.3 mm: 6 leads)



The neck of the lead tube is simply inserted into the end of the mechanical pencil - all twelve leads can be filled into STAEDTLER graphite 760, STAEDTLER Mars micro 775 or STAEDTLER graphite 779 in one go!




  • No touching of lead
  • No dropping of lead
  • No breaking of lead
ISO colour coding
ISO colour coding The identical colour coding of mechanical pencils, mechanical pencil leads and technical pens facilitates recognition of the different line widths.

efficient for ecology - STAEDTLER® acts ecologically and efficiently at the same time!



Efficient and environmentally safe - that's the idea!


  • More than 90% natural raw materials
  • Unique ecological manufacturing process without PVC or softening agents
  • High break resistance due to flexible lead
  • Simple “12-a-go” refilling for Mars micro, graphite 779 and graphite 760

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