Drill-Out™ is a revoluntionary method of removing broken bolts. The precision ground, left-hand cutting, self-centering drill point makes it easy to use even when the break is jagged. The drill body is manufactured using the finest M2 tool steel, heat treated for maximum toughness. The collet is manufactured using a special alloy steel.
To remove a broken bolt:
Chuck the tool into your 3/8" reversible drill, back off the collet, and drill into the bolt in reverse.
When you reach a depth of about 1/2", stop and pull the Drill-Out out of the bolt.
Advance the collet all the way down.
Place the tool back into the hole you drilled and run your drill in reverse again.
The Drill-Out firmly grips the broken bolt and backs it right out. The specially-designed collet actually expands against the inside of the bolt as the drill is turned, screwing itself in and gripping tighter as it goes.
This set includes all four sizes to cover all bolt sizes from 1/4 to 1/2 inch (6 to 12mm).
We also offer individual Drill-Out Bolt Extractors (Part No. 3743) if you don't need all 4 sizes.
