... and one-time high precision and small error, good quality, punch diameter (0.5 mm - 100 mm), and can accomplish ... , aluminum, copper, steel board, PVC film materials, shape: long hole, square hole, round hole, tureet, holes, tensile abnormal scales.Products are widely used in ... offer convenienceThe diameter of holes,.B, to the side of hole.C, the thickness of the steel plateD, overall length, ...