<p>Which rubber and clay do you often use?</p><p>Don't hurt the paper. You can use it to erase pencils, drawings and cosmetic traces.</p><p>The calibration is clean and not evenly turbid. That is, it is also possible to use clay.</p><p>It can be combined to make a variety of graphics. Contains no grease and keeps hands clean. Because it is not dry, it can be reused.</p>