RUKO HSS multi-purpose hole saws are available in a range of Imperial sizes up to 8-1/4 inches, with cutting depths up to 1-1/2 inches. The nearest metric equivalent size is stamped on each tool. These bi-metal hole saws have a hardened steel backer and HSS cutting edge for clean, efficient cuts in many metals, plastics and wood.
These multi-purpose, bi-metal hole saws have an alloy steel jacket and cutting edges of either high speed steel (HSS) or high speed steel Cobalt 8 (Co8). RUKO hole saws are supplied by AutomationDirect in various sizes ranging from 9/16 inch hole saws (14 mm) to 8 1/4 inch hole saws (210 mm). Inch and metric equivalent (mm) hole saw sizes are stamped on each hole saw blade.
RUKO HSS (red) and Co8 (white) hole saws
and available arbor assembly accessories
Bi-Metal hole saw kits include either 6, 10 or 15 High-speed steel or Colbalt 8 hole saws of various sizes in a plastic case.