Precision cutting edges for soft and hard wire as well as piano wire, and cuts bolts, nails, rivets, etc. up to 5.2 mm dia (Model 71 31 200) and up to 6.0 mm dia (Model 71 31 250). Made of chrome vanadium heavy-duty steel, forged, oil-hardened. 60 % less effort required compared to conventional high-leverage diagonal cutters.