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4 star Building 960 sq ft addition

These bits work great for going through studs and floor joists when running electrical wire. I use a Dewalt compact impact driver to get between studs. Able to drive through 3 studs at one time with out backing out. It so easy my 4 yr old does it by himself. If you hit a nail, the bit is basically junk - It has a hard time finishing the hole.