10Pcs Heavy Duty Carbide Hole Saw Kit For Metal, 1/2" To 1-7/8" Inch, Plastic ?High Quality Material?Hole Saw made of high-quality TCT (Tungsten Carbide Tipped) hard alloy, with premium YG10X hard alloy teeth, It is wear-resistant, high hardness, rust resistance and has excellent cutting performance as metal cutter, ensuring long-term use. ?Three-blade Design?TCT Hole Saw Set teeth designed with Three-blade, Include outer blade, middle blade, and inner blade, enabling smoother cutting for each tooth during the cutting process. The alloy blade head of carbide hole saw is inclined forward at an angle of 5 degrees, allowing the blade to effortlessly cut through metal and improve work efficiency, ideal choice for cutting hard metals. ?Carbide Drill Bits?The hole saw drill bit is made of high-quality material and undergoes processes such as high-temperature quenching, forging, and titanium plating. This results in a high strength and excellent wear resistance. This metal drill bits also has precise positioning and good toughness. ?Widely Application?The hole saw kit allows fast and accurate cutting of metal materials up to 1" (25mm) thick. The carbide hole saw is suitable for use with bench drills, magnetic drills, pistol drills, impact drills, and more. Perfect for general sheet metal applications including hard metals, stainless steel sheets, square tubes, iron, cast iron, wood, and F.R.P. Note: It is not suitable for use with concrete, tiles, or stone materials. use water for cooling during operation, as it can prolong the lifespan of the drill bit. ?Quality?: We provide three years of quality for our hole saw set,Our official will serve you within 24 hours whenever you have question, and you can return back to Amazon and take back your money if meet any quality problem, no worry about waste the money!