... , mechanism, petroleum, aeronautical and space, electric apparatus and suitable for markings on steel, metal, nonmetal and hard plastic materials. Portable Dot Peen ... , 300mm×200mm, 400mm×300mmMarking Depth0.01~2mmMarking Speed≤50mm/second (for characters height of 3mm or 3-4 numbers /second)Lifting ... Photos: LCD Control Metal portable Dot Peen Marker with CE for Stainless Steel / Aluminum / Iron ...