Artu Multi Purpose 5/16 By 4-1/2 Inch Colbalt & Tungsten Carbide Drill Bit #01040

Artu Multi Purpose 5/16 By 4-1/2 Inch Colbalt & Tungsten Carbide Drill Bit #01040

Regular price
$6.99
Sale price
$3.99
Unit price
per 

Key Features

  • Chrome vanadium steel shank for enormous strength and flexibility
  • Requires no center punch and eliminates walking
  • The blend and high tech bonding of cobalt and tungsten carbide allows bit to withstand temperatures up to 2000 deg F
  • Special negative back grinding enables the tip to bore through materials with a filing action, not cutting
  • Resharpens on a high-quality silicon carbide grinding wheel
  • Uses standard coolants such as turpentine, light oil, water
  • Flat bottom parabolic flute for faster waste removal