Twist drill bit

Description

Twist drills are rotary cutting tools that normally have two cutting edges and two flutes which are grooves formed in the body to provide cutting lips, to permit the removal of chips and to allow coolant or cutting fluid to reach the cutting action. They are identified by the:

• Shank style - Straight or Taper
• Length - Screw Machine, Jobber or Taper length
• Material 
• Helix or Spiral of the flutes

• Din**8 Standard (Dia 0.2mm - 4.9mm)
• Din**0 Standard (Dia 1mm - 9.1mm)
• Din***7 Standard (Dia 1mm - 8.7mm)
• ASME B.*4.**-Jobber Length
• Din**5 GB ******5
• Din**1 GB***9
• ANSI Standard
• HSS Silver&Deming drills
• Centre Drill
• Masonry Reglar Helix ("L" flute, "U" flute, "R" flute, "high helix")
• Wood drills bit
• Fiat Woodboring Bit
• SDS Hammer Drill