4025-4TH Holey Star Bit Socket | ½”Drive 100mm Long | Tamper-Proof S2 Steel

Extended 100mm Reach Clearance Axis & Two-Piece Material Matrix

The 4025-4TH Structural Profile optimizes deep mechanical alignment while maintaining high torque transfer:

• 100mm Elongated Operational Axis: Specifically configured for hard-to-reach hardware setups where standard 55mm short tools bottom out against outer shields, frame brackets, or manifold lips. This continuous long bit provides a highly stable inline line-of-sight torque corridor, completely eliminating the dangerous play, flexing, and socket-separation risks caused by chaining short sockets onto multiple extensions.
• Premium Two-Piece Press-Fit Construction: Built to withstand high manual turning forces without structural loose play. The high-performance security bit is ground from premium, high-hardness S2 screwdriver tool steel to protect the hollow tip from distortion. This bit core is factory hydraulic-pressed under intense load into a drop-forged Chrome Vanadium (Cr-V) steel hand socket base.

Signature Split Dual Finish & Safe Manual Hand-Operating

• Functional Factory Dual Finish Layout (Mirror Upper + Satin Lower): The drop-forged Chrome Vanadium socket base features an advanced split-surface protection layer:
  • Mirror Finished Upper Section: The upper part of the socket barrel is finished in a high-luster glass chrome plating that actively sheds workshop grease and lubricants, ensuring the tool wipes completely clean in seconds.
  • Satin Finished Lower Section: The lower part of the socket collar incorporates a texturized satin matte band. This provides essential surface friction, giving the technician non-slip finger-grip traction when turning fasteners down by hand in greasy environments.
• Strict Manual Hand-Operating Alignment: Built strictly as a manual tool for static hand leverage. It is precision-tempered to handle steady manual leverage via heavy 1/2″ drive breaker bars and ratchets smoothly; it must never be subjected to the brutal percussive impacts of power drivers.