This SAE and Metric wrench set is forged from high-quality chrome vanadium steel, and black electrophoretic paint after phosphating blackening, and has excellent rus corrosion, resistance, and a long service life. The wrench hardness up to HRC 50 makes the wrench able to bear more ...This SAE and Metric wrench set is forged from high-quality chrome vanadium steel, and black electrophoretic paint after phosphating blackening, and has excellent rus corrosion, resistance, and a long service life. The wrench hardness up to HRC 50 makes the wrench able to bear more force.
Ratchet anti-slip tooth design keeps the wrench head tight, with no slipping and flopping around, increasing anti-slip property by 30%.