Irwin Bi Metal High Speed Hole Saw

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.