20 Pcs Carbide Hole Saw Kit

HIGHFIRE 20pcs Carbide Hole Saw with Case, Carbide Tipped Hole Cutter with Pilot Drill bit for Stainless Steel, Iron, Aluminum, Alloy, Plastic   【TCT Hole Saw Set】13 Pcs hole saw kit which cutting diameter 64mm(2-1/2"),90mm(3-9/16"),16mm(5/8"),19mm(3/4"),22mm(7/8"),25mm(1"),29mm(1-1/8"),32mm(1-1/4"),35mm(1-3/8"),38mm(1-1/2"),44mm(1-3/4"),51mm(2"),54mm(2-1/8"), 2 Pcs drill bits ,2 Pcs hex keys and 3 Pcs springs 【Unique TCT Hole Saw】highfire TCT hole saw teeth designed with three-blade, includes outer blade, middle blade, and inner blade, making it sharper and more efficient, ideal for cutting hard metals. 【Wide Application】Ideal for stainless steel, metal, iron, and plastic, aluminum, FRP, etc. and more. Remember to add coolant during continuous high-speed drilling. 【Efficient Cooling】Designed with double round circles to remove metal filings easily and efficient cooling.You can use a lubricant ,so the bit will not overheat. It can be water or oil. 【24-Hour After-Sales Service】If you h