DIN1869 135 Split Angle Fully Ground HSS Double Ends Twist Drill Bit

DIN1869 135 split angle fully ground HSS double ends twist drill bit

1. Material: 4241, 4341, 9341, 6542, M2, M35, and M42 +Co 5% etc. double ended.
2. Manufacturing Art: Fully ground,milled,forged
3. Application: For drilling in steel, cast steel, malleable iron, sintered metal, non-ferrous metal and plastic,or wood.
4. Packing: Paper box, or Plastic box,punch bag,set case etc
5. Dia Size: 3.0mm-6.5mm
6.Surface finish:bright white,black,tin-coated, black&yellow,bronze coated,rainbow,Zirconium coated,coffee etc (pic:bright)

7.135 degree or 118 degree;
8.Double End twist Drills are fluted and split pointed on both ends and have a solid center shank for chucking. They will drill twice as many holds as a Single End Drill for only a fraction more in cost. When one end gets dull or breaks, it can be quickly reversed in drill chuck to reduce change-over time, overall costs, and inventory.
9.suitable for metal drilling metal 5mm thickness with less hardness HRC35.