Solid Carbide Twist Drill Bit For Metal Drilling 

Metal Drilling Tisin Coating  Carbide Twist Drill Bit Tungsten carbide twist drill is a kind of tool for drilling round hole of work piece through its relative fixed axis rotary cutting.  It is named for its spiral twist shaped chip holding groove.  There are 2 flute twist drill bits, 3 flute twist drill bits or more flutes, but 2 flute are the most common for twist drill bits.  Twist drill can be used on drilling machines, milling machines, lathes and even machining centers. d=D Cutting dia.(mm) Lc Cutting length(mm) L Overall length (mm) 0.80-1.00mm 12mm 50mm 1.05-1.50mm 14mm 50mm 1.55-5.00mm 18mm 50mm 2.05-2.50mm 20mm 50mm 2.55-3.00mm 25mm…