Description:Hollow Drill Bit Magnetic High Speed Steel Milling Cutter Depth Polish Punch Cutter For Multipurpose Hand ToolSpecifications:Product NameMagnetic Hollow Drill BitMaterialHSSColorSilverThickest Cutting Depth33mmSize(Cutting Dia. x Total Length)12mm: app.12x30mm/0.47x1.18in13mm: app.13x30m..