This eraser combine by 9 pcs of small triangle eraser, use the tip of triangle, easy to erase details, very easy to use.
You can change the postion of triangle small erasers can use all triangles, as each triangle have 6 angles, totally there are 54 angles to use.
You can change the postion of triangle small erasers can use all triangles, as each triangle have 6 angles, totally there are 54 angles to use.