The Wera 848 HSS Metal Twist Drill Bit in 4.1mm provides a precise intermediate diameter particularly useful for close-tolerance fitting, stepped hole enlargement, and tapping preparation where standard 4mm is marginally undersized. The split point tip grips the workpiece immediately, ensuring clean, accurate drilling without centre-punching in most situations. High speed steel construction with finely-tuned material elasticity means the bit handles drilling stress efficiently, reducing the risk
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