GRENPRO Allen Wrench Drill Bit Set 22pcs Hex Bit Set，Impact Driver Bit Set，Sc…
Allen Key Set, 1/4 ” quick release hex-shank, 4 ” long. Hex key set torsion zone to absorb torque peaks to avoid breakage. For impact driver and heavy screw driving. Manganese Phosphate surface to prevent rust，Upgrade the orange protective cover, double the anti-rust effect.