IRWIN® Bi-Metal Holesaw Kit 1200GThis Irwin Bi Metal Holesaw Kit is available in a unique and attractive soft storage case incorporating an unbreakable hinge, and internal padding to protect its contents. The case has an integral handle, and has a cardboard sleeve containing important product information. The Bi Metal holesaws cut through a variety of materials, including aluminium, copper, iron, stainless steel, wood, and zinc. They have precision set teeth for faster penetration,