【Various Sizes】- SHALL 20pcs magnetic nut driver set contains 8pcs SAE nut drivers (1/4 , 9/32 , 5/16 , 11/32 , 3/8 , 7/16 , 1/2 , 9/16 ), 8pcs Metric nut drivers (7mm, 8mm, 9mm, 10mm, 11mm, 12mm, 13mm, 14mm), and 4pcs screwdriver bit (PH1，PH2，SQ2, T20). The extended 6’’ power drill driver bits can easily reach deep and narrow spaces that the standard-size drivers or your fingers cannot reach.
【High Quality】- The hex nut driver set rod is made of Cr-V steel and the screwdriver bit is made of S2 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.
【Strong Magnetic Force】- Each nut driver has a reinforced rubidium magnet inside with with its deep enough interior to ensure secure lock and to hold the nuts and fasteners firmly without falling off.

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