Description 10pcs 12 16 18 20 25 30 35 40 45 50 mm HSS Hole Saw Cutter Drill Bit Set Metal Wood Alloy Cutter Tool Specification Material HSS High Speed SteelSize 12 16 18 20 25 30 35 40 45 50 mmPlease work safely Protective equipment Shank Size approx 6 8mmAbout 6mm Cutting DepthOptimal Rotational Speed 280 300r minQuantity 10pcsFeatures 1 after a special heat treatment sharp edges high strength 2 with high precision cutting smooth special impact resistance good wear resistance3 open the hole smooth without burr saving time and effort 4 when cutting Chilled materials cutting edge should be filling cooling liquid 5 can be used for thick steel plates cast iron wood stainless steel aluminum fiberglass non standard angle iron and other metal open hole Note If you cut the hard material such as steel ceramic tile etc you need to use the oil or water to low the temperature if not maybe the drill bit will be broken due to high temperature please understand Package Included 1 Set x 12 50mm Hole Saw Cutter 10Pcs Notice 1 Please allow 1 3mm error due to manual measurement pls make sure you do not mind before you bid 2 Due to the difference between different monitors the picture may not reflect the actual color of the item Thank you More Details