The runner Plast is the best I've ever had eraser. He not only erases pencil without smearing, even crayon can be very well located. Depending on how resistant pressed and what quality of paper was used sees no color residues longer on paper. The Radiergummirückstände adhere very well to each other, making small lumps are formed, which can then also can be easily disposed of.
Anyone wishing to use a reliable and smear-free eraser is well served here.