Premium Quality: Made from high quality TCT carbide (tungsten carbide tipped burrs) and titanium plated cemented carbide teeth, ensuring high hardness, anti-rust properties, strength, and durability Dimensions: Cutting diameter: 35mm, depth of cut: 25mm, shank diameter: 10mm, suitable for drilling hard metals Unique three-blade design: This TCT hole saw features an outer blade, middle blade, and inner blade, providing enhanced sharpness and cutting efficiency, ideal for hard metals Versatile tools: This tungsten carbide hole saw set is compatible with bench drills, magnetic drills, gun drills, and percussion drills. Suitable for stainless steel plates, square tubing, iron, cast iron, wood, FRP, and other common sheet metals. Note: Not suitable for concrete, tile, or stone High precision and easy to use: TCT carbide steel teeth enable fast cutting and clean round holes. Compatible with hand-held electric drills, motorized pedestal drilling machines, and magnetic drilling machines Specifications: Material: TCT carbide; Cutting depth: 25mm; Shank diameter: 10mm Package included: 1 x TCT Hole Saw, 1 x Titanium Plated Pilot Drill Bit Warm Tips: Do not use on concrete, tile, or stone. Use a lubricant during operation to prevent overheating. Water or oil can be used as lubricant