WOPEX. The tree-saving wonder! The WOPEX pencil from STAEDTLER is extremely innovative and ecologically efficient. The WOPEX pencil is available in degrees 2H, HB and 2B. Its non-slip, velvet soft surface offers a unique writing experience. The innovative WOPEX material is a natural fibre material with 70% wood. It enables a significantly higher utilisation of wood per tree using PEFC-certified wood from sustainably managed forests. WOPEX is manufactured completely solvent-free, offers particularly high break resistance and a significantly longer write-out length than normal wood-cased pencils.