GRENPRO Allen Wrench Drill Bit Set, 22PCS 4-Inch Metric & SAE Impact Bits | 4-Inch Magnetic Hex Bits with 1/4-Inch Shanks Reach Recessed Fasteners and Fit Impact Drivers for Automotive and Home Repair 4" 22pcs(Metric&SAE)

Hex Bit Socket Set widely used in household maintenance, automobiles, various screw drives, and other suitable tools projects.If you have any questions, please contact us, we are willing to serve you attentively. CNC machined tips, S2 alloy steel body, hardened core to increase bit strength and reduce fracture. Manganese Phosphate surface to prevent rust，Upgrade the orange protective cover, double the anti-rust effect. Impact driver bit set strong magnetic and high precision. each edge can be accurately locked screws.Strengthened magnetic impact bit helps you easy pick up screws. The magnetism doesn’t decay after multiple uses. Hex key set torsion zone to absorb torque peaks to avoid breakage. GrenPRO Allen Socket Set 15 times life expectancy versus standard bits. For impact driver and heavy screw driving. GrenPRO hex head allen wrench drill bits sets, 10 pcs Metric（1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 5 mm, 5 mm, 6 mm, 7 mm, 8 mm）.10pcs SAE（5/64 ”,3/32 ”, 7/64 ”, 1/8 ”, 9/64 ”, 5/32 ”, 3/16 ”, 7/32 ”, 1/4 ”, 1/4 ”, 5/16 ”）. Allen Key Set, 1/4 ” quick release hex-shank, 4 ” long.