Viking Super Premium Ultra Bor Studout™ Extractors Square Style Forged Hi-Carbon Steel Type 421-UB & 240-AL Left Hand Spiral Drills: 8-Pc Set E-1, -2, -3, -4 + 1/8, 3/16, 1/4, 5/16

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Viking Super Premium Ultra Bor Studout™ Extractors Square Style Forged Hi-Carbon Steel Type 421-UB & 240-AL Left Hand Spiral Drills: 8-Pc Set E-1, -2, -3, -4 + 1/8, 3/16, 1/4, 5/16

The square shape of these extractors gives the tools the ability to remove broken bolts, screws, and pipes with minimum deformation of the broken part. These extractors will not chew up or expand the object to be removed.

-Spiral style
-Remove broken screws, bolts, threaded parts, and pipes
-Broken piece is extracted without damage to threads

To remove the broken threaded parts: Drill a hole in the end of the broken part (left hand spiral heavy duty drills are recommended for this drilling operation), insert extractor, then turn counterclockwise using a wrench on the exposed end of the extractor.

240-AL
-Special Hi-Molybdenum tool steel.
-135° split point for fast penetration and accurate starting without center punch.
-Precision ground point, flutes, body, clearance, and drill diameter for the ultimate in accuracy and performance.
-Body and clearance are gold surface treated for maximum lubricity.
-Ideal for removing broken studs.