Everyone makes mistakes: it's just that certain people's require major reconstruction projects to fix; for the rest of us, there are keshigomu <literally, wiping-out gum (rubber), i.e., erasers!>; some of these are made of colored vinyl, others are artists' gum
Each of the pairs of images are the fronts and backs of the erasers. The larger ones are 1-3/4 x 1-3/8 x 3/8 inches (4.5 x 3.5 x 1 cm.), the smaller ones are 1-1/2 x 1-3/16 x 3/8 inches (4 x 3 x 1 cm.)
