Specification Brand : WKS TOOL BulletPoint1 : Suitable for tapping blind holes in carbon steel,alloy steel,copper,aluminum alloy,magnesiom alloy BulletPoint2 : Round shank with square end,Bottoming Chamfer BulletPoint3 : 1 pack of 1 pieces per size BulletPoint4 : Easily tapping to the botton of hole,excellent cutability,scraps don’t leave behind in the hole Color : Silver ExternallyAssignedProductIdentifier1 : 0190203922398 ExternallyAssignedProductIdentifier2 : 190203922398 FinishType : Titanium Nitride IncludedComponents : Flute Tape ItemName : WKS HSS Spiral Flute Thread Milling Taps Plug Tap Screw Tap Threading Tools BSW (1/8'' -40) ItemPackageDimensions_Height : 1 inches ItemPackageDimensions_Length : 3 inches ItemPackageDimensions_Width : 1 inches ItemPackageQuantity : 1 ItemTypeKeyword : spiral-flute-threading-taps Manufacturer : WKS TOOL Material : high-speed steel MeasurementSystem : english/standard ModelNumber : TCA243S NumberOfItems : 1 PartNumber : TCA243S Pattern : 1/8'' -40 ProductDescription : The chamfer,thread length are specially designed these newly developed products will help increase machining efficiency while reducing tool consumption Suitable for tappping Blind hole in Carbon steels and Alloy steels,where chips are produced in a continuous coil state. CNC Style enchances chip evacuation and cutting fluid flow to the cutting teeth for reduced friction, heat and galling. Also reduces contact between the tap and the workpiece. Bottoming Style are designed to lift the chips sout of the hole in blind hole tapping, eliminating chip evacuation problems which can result in damaged threads and broken taps. They will also bridge opeings, keyways and other interruptions in the tapped hole. Lubrication:Water-soluble, non-water soluble, and emulsified, mineral oil, and so on..