Coring Holes In Concrete Cord Free
Contractors cut holes in concrete with borings bits of various sizes. Some are really big. The majority are made to be cooled with water to carry away waste material from the cutting. The drive units are big and bulky and need power cords that are conveneint to trip over.
Developments in battery and cordless equipment tech have created tools like Metabos 9" cordless angle grinder that is paired up with US Saws Core EZ system to allow you to munch through concrete with ease now..
You can drill from a 3" to 10" hole. The tool is powered by either a single 36V battery or tow 18V.
Hit the link at the top for more info on the story at Core77.