3Pcs 1/4" Hex Shank SQ1 Magnetic Head 4" Length Square Head Screwdriver Bits

The screwdriver head is made of S2 steel, which has high strength, hardness (HRC58-60), strong torque, wear resistance and impact resistance, and will not bend or deform after long-term use. The phosphate blackened surface improves corrosion resistance, enhances surface hardness, ensures durability, and is suitable for industrial use. Our drill bit integrates a magnetic design for stable vertical/oblique screw absorption, paired with a high-precision and finely crafted square 4-corner head. Its high-temperature quenched hardness and sharp edges, delivering stable, non-slip operation with exceptional screw fit and impact resistance. Easily install on screwdriver handles, it simplifies work even in tight spaces, significantly boosting efficiency. The 1/4" hex shank screwdriver bits are widely used in manual electric screwdrivers, drills and electric drills. Suitable for removing or installing screws for furniture assembly, mechanical equipment installation, automotive repair, home DIY projects, homemade furniture, architectural woodworking construction, etc. Avoid excessive force when tightening the screws to prevent the screwdriver bit from being damaged or slipping out. Store the screwdriver bits in a dry place to prevent rust and maintain its performance.