Roto Brute |
http://www.championcuttingtool.com/rotobrut.htm
The most economical system for quickly cutting large
holes in steel is Champion's RotoBrute system.
Rugged enough for use on the job-site or in the shop,
the RotoBrute system penetrates quickly, cutting
clean, burr-free holes. The strength of its magnetic base
allows RotoBrute drills to be mounted vertically,
horizontally or overhead. And since only the periphery
of the hole is cut, the pilot pin quickly ejects the center
as a plug of steel.
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