Luomorgo 4.25 Inch 108Mm Hole Saw, 1 1/4 Inch Cutting Depth Hss Bi-Metal Hole Package Contains: 1 x 4.25 Inch Hole Saw, 2 x Drill Bit, 1 x Allen Wrench. This Hole Saw Drill Bit is designed for wood / plastic cutting. High-Performance Materials: Hole saws made of M42 high-speed steel and BI metal, with higher hardness (?65HRC), higher toughness, higher cutting strength and stronger wear resistance. Efficient Smooth Cutting: High-quality bi-metal band and the best cutting performance of HSS teeth combines with Non-binding clean edge design ensures smooth and clean cutting of the hole saw blade. Widely Used: Very suitable for use in corn perforated panels, drywall, wood, plastic, plaster, thin slate, acrylic panels and other home projects, such as recessed lights, speakers, air ducts, etc. Risk-Free Shopping: If you are not satisfied with any Luomorgo products, we have nothing to ask and let you enjoy a full refund. Because we want our customers to enjoy a satisfied shopping experience.