Staedtler Mars Draft Tech Pencil, 4H/3H/2H/H/F/HB/B, 0.5/0.7 mm, Black Barrel, 2 per Pack (925ASBK2) Finely machined tip. Wide profile barrel with rubber non-slip grip. Adjustable window shows lead hardness degrees: 4H/3H/2H/H/F/HB/B Fixed 4mm lead sleeve, brass clutch mechanism. Covered white vinyl eraser handles all your toughest correction needs.