Brownells 4mm x 1.25" Metric Allen Head Bit

The Brownells metric Allen head bits are tailored to provide a seamless experience for users, minimizing the risk of stripping screws or damaging firearm components. Their precise fit reduces the likelihood of slippage, which can be a common issue when using standard tools on metric screws. This attention to detail underscores the commitment to quality and performance. Precision machining - each bit undergoes precision CNC machining to guarantee an exact fit in metric hex screws, significantly reducing the risk of stripping or damaging screw heads during maintenance operations Constructed from hardened steel, these bits provide outstanding strength and durability, capable of withstanding the demanding conditions of gunsmithing applications Compatible with Brownells Magna-Tip handles and other standard 1/4 inches drive tools