PT® Hole Drilling Tool (Mini Hole Thing)  
Cut up to 4-1/2" holes in sprinkler pipe.  
Rack & pinion drive reduces drilling time. No pilot hole necessary.  
Mounts easily and quickly to pipe from 2" - 6" in diameter. 
Secure grounding of the electric drill to pipe eliminates shock danger.  
Drill won't bind and twist to injure fingers or wrist.  
Available: Milwaukee 1660-6 1/2" Compact Drill  
Hole Saw travel distance of 3-½"