The 33mm IRWIN Bi-Metal High Speed Hole Saw is specifically sized for many HVAC and ventilation applications, as well as larger plumbing installations. This diameter provides the precise clearance required for numerous standard fittings and is particularly useful when working with insulated pipework that requires additional space. Built with robust bi-metal construction and electron beam welded teeth, this 33mm holesaw maintains cutting efficiency through repeated use. The sharp, variable tooth
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