HMT VersaDrive Heavy Duty Drill-Tap

"VersaDrive® Heavy Duty Impacta-Drill Taps are an industrial metalwork or fabrication tool for drilling and tapping heavy steel in one easy operation. Primarily they are designed to be used with a reversible Magnet drill, although they can also be adapted for use with an impact wrench to enlarge and tap existing holes. With a drill point optimised for use in fixed drilling machines like Magnetic Drills or Pillar drills, these are not recommended for use in a pistol drill. Where they are to used with an impact wrench to enlarge and tap holes pilot drilling is recommended with a separate drill bit."