We have put this kit together to make it easy for you to remove pencil marks and debris and minimize scratches in your final preparations. The magic eraser is made of a lightweight special melamine sponge polymer that removes pencil and washable ink from your typodont teeth. A great companion to SDS Secret Sauce when cleaning up your work before submission for a grade. May be cut into any size for access and convenience when using. The Secret Sauce is an SDS formula that works great to remove all marks and leave the prepared surfaces smooth (the scratches look less prominent). We’ve added a special super-fine toothbrush to facilitate the cleaning.