36-522, Bi-Metal Hole Saw 1-1/4in (32mm)Compatible with 1/4 in. Round Arbor 36-570, 3/8 in. Hex Arbor 36-571, 7/16 in. Hex Arbor 36-572.When it comes to purchasing a Bi-Metal Hole Saw, look no more, the IDEAL line of Bi-metal hole saws is the most flexible and easy to use line in the industry. Effectively cuts through a wide range of materials, from stainless, sheet metal, as well as common non-ferrous materials, such as aluminum, copper, brass, wood, engineered wood, nail embedded wood and plastics.While traditional Bi-Metal Hole Saws are constructed of M3 material, IDEAL hole saws utilize M42 high-speed steel with an additional 8% of premium cobalt. This provides higher-strength, greater wear resistance and is less prone to chipping. Constructed with its rigid solid steel back plate to provide additional strength eliminating the need for an additional drive plate. Minimizing vibration and extending the life of the hole saw and drill battery life providing an economical longer life experience.The unique fleem ground tooth design enables more uniform pieces of material to be cut per tooth. Its 4/6 variable pitch geometry cuts down on harmonic noise when cutting through tough metals, which can cause premature stripping of the teeth.To further simplify the cutting process, the IDEAL line of Bi-Metal hole saws come standard in 1-7/8" cutting depth to provide flexibility for uncommon situations and lesson the cutting time.Application Use:Creates holes for pipe and tubing installations, door lock installations, electrical conduit and hoses.Ideal for a wide array of trades: Electrical, Plumbing, General Construction, Maintenance and Automotive.Compatible with a variety of materials: mild steel, stainless steel, nailed wood, engineered wood, copper, brass and rod iron.