Specification Brand : WKSTOOL BulletPoint1 : Durability and Heat Dissipation:spiral twist drill bit. Crafted from high-hardness tungsten steel, Nano coating enhances resilience and provides superior heat dissipation even at high speeds.Ensures durability and optimal performance throughout fast drilling processes., even at high speeds. Ideal for deep-hole machining, deep cavity drilling, fast drilling, O.D. milling, spotting, holemaking, threading, plunging, form milling, and CNC metalworking processes. BulletPoint2 : Precision Design and Manufacturing:Engineered for precision, these drills tolerance of less than -0.01mm (-.0004 inch). The h6 shank, ensuring your workpieces meet the highest quality standards.quality control testing to deliver exceptional performance. BulletPoint3 : Wide Material Compatibility:Wide range of materials, including hardened steels, aluminum alloys, copper alloys, brass, bronze alloys, high-temp alloys, stainless steels, machining hardened steel, free machining steels, low/medium alloys steels, carbon steels, alloy steels, cast iron, mould steels, and more (up to 55HRC). BulletPoint4 : High Speed and Smoothness:Experience exceptional efficiency with our high-performance miniature drills. The double margin design ensures exceptional hole accuracy and a flawless finish. The four-facet point eliminates the need for a pilot hole, providing effortless drilling. BulletPoint5 : Drill Size:11.1mm Drill Dia.-100mm Max.Drilling Dp.-150mm OAL(.623 Dia.-2.16 Max.Dp.-5.89 OAL inch) BulletPoint6 : Package:1pc,Multiple sizes and hardness to choose from, catering to different work requirements Color : One Color ExternallyAssignedProductIdentifier : 7375605033726 ExternallyAssignedProductIdentifier1 : 0756783778857 ExternallyAssignedProductIdentifier2 : 756783778857 FinishType : Titanium Aluminum Nitride ItemName : WKSTOOL11.1mm Drill Dia 5.91 inch (150mm) OAL,Extra Long Deep Drilling Holemaking Straight Solid Carbide Precision CNC Mill Bit ItemPackageDimensions_Height : 4 centimeters ItemPackageDimensions_Length : 16 centimeters ItemPackageDimensions_Width : 4 centimeters ItemPackageQuantity : 1 ItemShape : Round ItemTypeKeyword : long-length-drill-bits Manufacturer : WOKESI Material : Tungsten Steel ModelNumber : CFTGIWd1u2afsipr-02 NumberOfFlutes : 2 NumberOfItems : 1 NumberOfPieces : 1 PartNumber : CDT-WULL-150 ProductDescription : 1.Guaranteed Quality:Our solid carbide drill bits are subjected to rigorous quality control tests before leaving the factory. Each Carbide Drill Bit is inspected under high magnification to ensure that it meets our stringent standards. 2.100mm Max.Drilling Dp.-150mm OAL(2.1615 Max.Dp.-5.895 Oerall Length inch); Solid carbide drill bits offer long tool life and faster drilling speeds than other substrates,but more brittle.Make sure work piece and machine are stable,use hydraulic chucks,high quality collet chucks,or shrink fit chucks. 3.Please adjust the speed,feed and drilling depth according to actual drill conditions.Tool overhang,please use the required amount of minimum size,amount of long overhang is high vibration,turn it to lower the number of feed,when the tool overhang length is longer,please adjust the speed.feed and cutting depth. 4.Adapt to several kinds of cooling conditions, for example oil mist,water,oil,air cooling.