... according to the quantitySpecifications:Name:T-boltsStandard: GB37,1371type,1372 typ,1373 type,1374 type,1375 type,1376 type,1377 typeGrade ... 8.8, Class 10.9, Class 12.9StandardGB37, 1371type,1372 typ,1373 type,1374 type,1375 type,1376 type,1377 typeColorsilver ...