Description 6pcs 22 to 65mm Carbide Drill Bits Hole Saw CutterSpecification MaterialCarbide Alloy SteelDiameter22 65mm 22mm 30mm 35mm 45mm 50mm 65mm Total lengthabout 68mmShank Diameterabout 9mmQuantity1 set 6pcs Features Made of high quality alloy steel the blade is extremely sharped and resistance to cutting Have good perforation capability Effective length of 20mm can process the thick steel plate and the thick walled metal pipe material perforation When cutting Chilled materials cutting edge should be filling cooling liquid Can be clamped on hand drill and bench drill can be used for thick steel plates cast iron stainless steel non standard angle iron and other metal open hole Package Included 6 x Drill BitMore Details