Ratcheting mechanism allows you to reposition the wrench without having to unhitch it from the nut or bolt. Full polished with nickel chrome finish prevents corrosion. Thermal-treated mechanism ensures a long service life. Ratcheting mechanism allows you to reposition the wrench without having to unhitch it from the nut or bolt. Full polished with nickel chrome finish prevents corrosion. Thermal-treated mechanism ensures a long service life.