First, with a regular load logo, the best steel clamp should have a formal logo on the surface of the body to prove its quality is no problem.
Second, with complete documentation to prove that the regular steel clamp should have a perfect proof of quality, manufacturers and instructions, and so on.
Third, with a smooth surface, good steel pliers on the surface are smooth and no burr.
Fourth, it should be made of forging, the best steel clamp should be made of free forging or die forging made.
Fifth, all parts should be intact, the best of the various parts of the steel pliers should be intact, without a trace of flaws.