The pencils are such bad quality you cannot write properly using them.They are nearly invisible on paper.the darkness should be more so that it would be written clearly.not smooth as well for writing fast.The pencil quality is poor and easily breakable. The leads are brittle need to be more strong for easy writing. Do not recommend for others worst quality of pencils from Doms.try another pencils from market better than this one .easily erasable pencils not of use .not satisfied with the product needs to be improved.