SHALL 16PCS Magnetic Nut Driver Set – 6″ Long Nut Driver Set for Impact Drill

Adopt an updated version of super strong permanent magnets – RuFeB, which can firmly grasp the nuts, bolts etc. High Quality: The hex nut driver set rod is made of upgraded 40ACR steel for higher shock resistance, wear resistance and hardness; The surface is blackened with phosphate to prevent impact driver bit set from oxidation and corrosion.