The Möbius + Ruppert brass single hole castor pencil sharpener is designed for graphite pencils It has a unique longer blade and is designed to make a long-point style pencil point Suitable for hexagonal, round and triangular pencils up to 8.2mm diameter Mobius + Ruppert sharpeners are solid brass from the well known German specialist They are considered the finest in the world They have a thoughtfully designed, quality feel The serrated surface provides a reassuringly firm grip .
