Paper smoothing, no flash, print clearly, processing, storage life long, no damage to the dust off your printer, excellent. product57mm series cash register thermal printing paper rollswidth*diameter(mm*mm)57*30,57*40,57*50,57*60,etc.core size(mm*mm)13*19mmcolorwhite,or with printingthickness(mil)50-78printing effectexcellentpackageinner package is thin plastic film,then in cardboard carton, 100 ...