Steinwhale Impact Rated Screwdriver Bit Set, 3" & 4" Extended Long Magnetic Power Bits, Premium S2 Steel, Shock-Absorbing Design, 1/4" Hex Shank for Power Drill & Impact Driver (4 Inch SAE Hex)

• True Impact Rated & Shock-Absorbing: Not just hard—built to withstand brute force. Forged from premium industrial-grade S2 steel with an optimized heat treatment, the extended torsion zone absorbs peak concussive torque from high-powered impact drivers. Experience heavy-duty performance with zero snapping or shattering.
• Conquer Deep & Narrow Spaces: Say goodbye to frustrating clearance issues. The 3-inch (75mm) and 4-inch (100mm) extended length provides the ultimate reach needed for deep-set screws in automotive engine bays, tight mechanical crevices, and complex cabinetry installations where standard 1-inch bits simply cannot reach.
• Strong Magnetic Hold For One-Handed Use: Magnetized for maximum efficiency. The highly magnetized tips securely grip ferrous and iron fasteners, preventing dropped or lost screws in dark, hard-to-reach cavities. Enjoy smooth, confident, and effortless one-handed driving and fastening in any angle or position.
• Exact-Fit CNC Machined Tips: Engineered to eliminate cam-out and stripped screws. Each tip (whether Torx, Hex, Phillips, Square, or Pozidriv) is CNC-machined to exact tolerances for a lock-tight fit into the fastener head. This superior engagement transfers maximum power directly to the screw, extending the life of both your bits and your hardware.
• Universal 1/4" Hex Shank Compatibility: Ready for any tool in your box. The standard 1/4-inch quick-release hex shank with a precision power groove locks firmly into impact drivers, standard power drills, electric screwdrivers, and manual ratcheting handles, ensuring zero drop-out during high-vibration applications.
• Versatile Applications For Any Project: From professional trades to serious DIY, these specialized extended bits are designed to handle diverse scenarios. Perfect for automotive maintenance and tamper-resistant electronics (Security Torx), bike repairs and heavy machinery (Metric & SAE Hex), deck building and RV construction (Square/Robertson), or assembling European cabinetry and everyday home fixes (Pozidriv, Phillips & Slotted). Whatever the task, you have the right deep-reach tool to get the job done efficiently.

Specifications ✓ Head Type: Phillips, Pozidriv, Square, Hexagon, Slotted, Torx Security (Temper-Proof) ✓ Shank: 1/4 inch Hex Shank ✓ Bit Length: 3+4inch ✓ Hardness: HRC60+/- ✓ Material: S2 High Quality Steel. Much better than general steel, chrome-vanadium steel (Cr-V), alloy steel, precision cast steel, stainless steel, etc. S2 steel has high hardness, high torque, high abrasion resistance, good toughness. Package (10PCS) Phillips (PH0, 2xPH1, 2xPH2, PH3) Slotted (SL3, SL4.5, SL6.5)Pozidriv (PZ2) Hexagon SAE (5/64, 3/32,7/64, 1/8,9/64, 5/32, 3/16, 7/32, 1/4, 5/16) Hexagon Metric (H0.9, H1.5, H2, H2.5, H3, H4, H5, H6, H8, H10) Temper-Proof Torx (T6, T7, T8, T9, T10, T15, T20, T25, T27, T30) Package (3PCS)Square (SQ1, SQ2, SQ3) Pozidriv (PZ1, PZ2, PZ3)