Specialty end cutting carbide burs to be used in succession to step 1 of the Bust-N-Out system, to properly locate broken bolt center point
Prepares broken bolt surface for final drilling in center of broken bolt
Existing bolt hole provides a guide for bur's correct alignment to broken surface
Set includes: 1/4", 3/8", 5/16", 7/16" and 1/2" center cut
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