RUKO HSSE-Co8 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 an 8% cobalt high-speed steel cutting edge for clean, efficient cuts in harder metals, including stainless steel.
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