Check the listing for details. 1/2" to 10" Carbide Tip TCT Hole Saw Cutter Drill Bit For Steel Metal Alloy. Color: Gray, Condition: New. Listed at 11.07 USD. Product name: TCT Alloy Hole Saw Specification: 5/8'', 3/4'', 7/8'', 1'', 1-1/8'', 1-1/4'', 1-3/8'', 1-1/2'', 1-5/8'', 1-3/4'', 2'', 2-1/8'' Material: YG10X Tungsten Carbide Body material: 45# carbon steel Machine: Electric drill /Bench drill Working depth: 25mm Applicable materials: stainless steel less than 4mm, aluminum alloy, iron, angle iron, cast iron less than 20mm Tips: 1. Check whether the center drill is tightened, turn on the machine and check the concentricity of the hole saw. When drilling, place the hole saw perpendicular to the metal, otherwise the alloy will fall off easily. It is best to use cutting fluid to cool down the thick metal 2. Please follow the drilling speed table when drilling, otherwise it is easy to damage the hole saw 3. When using a hand drill, make sure that the hole saw is perpendicular to the metal, it is best to use a bench drill to operate