These are high-quality side cutters. On par with Klein from the USA. I'm an electrician and I use these as my everyday pair of dams. The blade steel used is of very high quality. These wire cutters cut #6 AWG copper wire with ease. They are also great for MC cuts. I wouldn't try to cut through a nail or screw with them as they aren't designed for this kind of heavy cutting, but I'm sure they will be able to cut through a nail with ease. I definitely recommend this particular pair of knives. Like Fujiya tools in general. I already have 4-5 different pliers and they are all excellent. If you hesitate to try Fujiya, I give you the green light to try them!