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Tungsten carbide tipped pilot drill for long bit life in abrasive materials
high strength steel
8mm 1/4" Hex Shank Diamond Core Drill
118º point angles are ideal for use in materials such as mild steel and cast iron
reducing the need for end thrust
Screw Extractor Size:Size 8 Screw Extractor (35-44.5mm) Tungsten carbide tipped pilot drillChrome alloy spiral screw extractor. Coarse pitched tapered screw thread. Spiral flute screw extractors are ideally suited for removing broken bolts, studs & socket screws from medium to hard metals. Typically the required screw extractor will be approx. 2 3 the diameter of the fixing you are extracting. Use a centre punch to mark the centre of the fixing before drilling to prevent the drill bit wandering. Select a drill bit that is suitable for