STAEDTLER was the first manufacturer to develop a coloured pencil lead with the Anti-Break-System (or A•B•S for short), especially designed for the special needs of children.
The richly coloured, highquality lead core in our coloured pencils with A•B•S is surrounded by a unique white protective coating. It is so hard and resistant that the break-resistance of the coloured lead is increased by up to 50%, making the pencil up to 30% stronger.
The principle of this protective coating follows a clever example from nature: just like a robust bamboo cane, the white protective coating protects the lead core where it most effective – from the outside – and additionally strengthens the bond between the lead and wood in the pencil.
The advantages are obvious: pencils with A•B•S no longer break as quickly, don’t have to be resharpened as often, and thus have a longer lifespan which ultimately benefits our environment as well.
From:http://www.staedtler.com.my/en/company/innovations-for-customers/coloured-pencils-with-abs/
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