Cleaning Squeegee with reinforced resinic fiberboard, suit for Solar plate and ... so on. The hardness extension of Hand-printing is from 55 shore to 65 shore.the machine printing is from 55A ... use the SS, AA, HQ series, hardness range is from 55 shore to 75shore.Electronic circuit printing R, RR, HQ, BD ... range is 70 shore and 75 shore. Tip: the 55 shore is made for the printing of glass and ceramics ...