1. Bi-hole saw kit can cut to a depth of 38mm / 1.5", and the diameter is 178mm / 7-1/5". The package includes a metal hole saw, a hex shank arbor, 2 center drills, 2 springs, and a wrench.2. The cutting edge is made of high-speed steel, which provides the hardness and wear resistance required for cutting, and can withstand higher cutting temperatures, reducing the risk of breakage and extending the service life of the hole saw.3. Not only is it capable of cutting wood, plywood, plastic, drywall, soft plaster, sandbag board, acrylic board, and soft metals, it is also suitable for drilling holes to install can lights, recessed lights, ventilation ducts, home improvement or other similar applications in the workshop.4. Metal hole saw kits can be installed on hand drills, impact drills, bench drills, and CNC drill presses.
eBay