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5/16" (8mm) Diamond Drill Bit with Water Cooling System - 1/pack

Product Number T56733

  • 5/16" (8mm)
  • Core ejection slot promotes water flow and removes waste automatically
  • Diamond sintered edge for long life and rapid cutting
  • Drill guide with water cooling system for extended bit life
  • Effectively cuts glass, marble, stone, and class 5 porcelain
  • Hollow bore for improved cutting speed
  • Patented welding technology for a durable cutting edge
  • Raised edge reduces skating for easy starts and accurate positioning
  • Reverse spiral extends life by channeling water to the cutting edge

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