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I think any of us that use D'versibits (6 foot long drill bits) have have a mishap, or 2, or 3....
Eagle,

I have a friend that used to do a lot of Alarm installations. He was in the Basement drilling up through a wall to get to the attic (I think) and he wasn't counting his extensions right and ended up going through the roof. [Linked Image]

[Linked Image]
Bill


Bill