... ,function including punching,shearing,twisting,bending,angle-bending,riveting,circle-forming. the tool set in JG Series is produced for both home ... National Patents. it's function including punching,shearing,twisting,bending,angle-bending,riveting,circle-forming.1. high effiency ,convienient 2.export ... JG-03-13 multi-purpose metalcraft tool set in JG Series