The Ingco SDBIM71PH250 Impact Screwdriver Bit Set consists of professional-grade power tool accessories engineered to withstand the extreme rotational torque and sudden concussive forces delivered by high-power impact drivers. Measuring 50mm in total length, these bits feature a standard PH2 (Phillips No. 2) profile on both ends, effectively doubling the operational lifespan of each bit in heavy-duty fastening and assembly lines.

Each bit is manufactured from high-alloy S2 industrial steel, which undergoes custom induction heat treatment to achieve maximum hardness and high fracture toughness. The design features a specialized torsion zone in the slim center section of the shank; this flexible corridor deflects high-torque peaks away from the fastener tip during sudden resistance, preventing tip breakage and screw stripping. Finished with high-strength magnetized tips, these bits hold screws securely during single-handed operation, while the standard 1/4-inch hexagonal shank profile provides non-slip retention inside quick-change chucks.

Technical Specifications

• Brand: INGCO

• Model Number: SDBIM71PH250

• Product Type: Impact Screwdriver Bit Set

• Tip Profile: PH2 (Phillips No. 2)

• Configuration: Dual-Ended / Double-Headed Tip Layout

• Bit Length: 50mm

• Shank Diameter: 6.35mm (1/4") Hex Shank

• Material Composition: S2 Industrial Tool Steel

• Treatment Profile: Advanced Induction Hardening with Torsion Zone

• Tip Features: Magnetic Tips for Screw Retention

• Quantity Per Pack: 2 Pieces

• Primary Applications: High-torque impact driving, dry-walling installations, sheet metal fastening, automotive assembly, and framing construction

• Packaging Type: Packed by plastic hanger or blister label layout