The 79mm IRWIN Bi-Metal High Speed Hole Saw is specifically sized for larger commercial installations and industrial applications. This diameter is particularly useful when installing substantial drainage components, larger ventilation systems and various commercial fixtures that require generous clearances through structural elements. Featuring robust bi-metal construction with electron beam welded teeth, this 79mm holesaw provides exceptional durability and cutting performance. The sharp, variable tooth design (4-6 pitch) delivers efficient material removal with reduced operator effort, producing clean holes whether working with timber or metal substrates. Features and Benefits: • 79mm diameter for substantial commercial installations • Bi-metal construction ensures long-lasting blade life • Variable tooth pitch (4-6) enhances cutting efficiency • Electron beam welded teeth resist wear and breakage • Cuts aluminium, copper, iron, stainless steel, wood and zinc • Professional quality for industrial applications Specifications: Size (mm): 79 Material: Bi-Metal Pitch: Variable

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