Only Staedtler's Lumograph art pencils for drawing and shading feature a lead bonded to the shaft so they don't break off while sharpening. Staedtler Mars lomography is available in up to 24 degrees of hardness for writing, drawing and sketching on paper, canvas, Matte drafting film and more.super bonded lead resists breaking while sharpening and drawing, both.plus it wears evenly and erases cleanly.
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