Operation 2: Cut a centre in the rough surface to ensure the hole is drilled centrally in the bolt using Bolt Centering Burr. Ensure that the bolt face mill is perpendicular to the broken bolt. This set contains: 1 Bolt Milling Burr / 1 Bolt Centering Burr / 1 Stub Drill HSS-Co / 1 Screw Extractor.
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