【HIGH QUALITY MATERIAL】Mirror polished wrench set is made of heat-treated chromium-vanadium steel with good toughness,waterproof and rustproof.Aerospace grade chromium-vanadium alloys are stronger,corrosion resistant and have a longer service life.

【72-TOOTH】Our wrench head adopts 72-tooth gear, rotates once only needs 5-degree working swing arc.It is convenient to work in a narrow space.It also speeds up your work without repeatedly lifting it.