SUNTECH GSM cutter is the genweigh GSM manual rotary textile GSM cutter for determining the GSM of fabrics by its rotary 4 blade design. You can cut a perfect textile circle by simply unlocking the unit and pressing down lightly to rotate 90 degrees. The rubber cutting mat and double sided flexible razor blades make the easiest, most economical way to cut fabrics for GSM determination. You may notice the blade direction when using it.