-High-quality pencil. -Ideal for school and office use. -Especially break-resistant thanks to super-bonded lead. -Easy to erase. -Easy to sharpen with any quality sharpener, e.g. our single-hole tub sharpener 511 004.-With eraser tip. -Degree: HB.efficient for ecology - STAEDTLER® acts ecologically and efficiently at the same time!The pencils are unbelievably break-resistant through special lead formulation and super-bonded lead. This means that the high stability and strength of the leads enable longer writing with fewer interruptions. Features Certification PEFC Break-resistant lead Yes Built-in eraser Yes Product colour Black, Yellow Hardness HB Weight & dimensions Lead diameter 2 mm Packaging content Quantity per pack 12 pc(s) Other features Country of origin Germany