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MK-190 Core Bits

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Group View - MK 190 Core Bits

Mk Core Bits Drill Through Porcelain, Tile, Glass, Stone, and Masonry

  • Drill through porcelain, granite, marble, tile, stone, and masonry
  • Vacuum Braze Technology provides the strongest bond between diamond particles and the drilling surface of core bit
  • Drilling Time Reduced by 50% compared with traditional metal-bond core bits
  • No bond to wear away - diamond particles work at peak performance at all times
  • Reverse spiral thread delivers continuous water feed to the cutting surface areas, extends bit life and improves drilling speed
  • Core ejector slot clears debris and plugs during repeated drilling operations
  • Designed to operate on any corded or battery operated hand drill


  • Hollow bore creates a core that guides the drill
  • Diamond grit edge, no bond to wearaway
  • Slotted edge and reverse thread spiral provide more water into the cut for quicker drilling and extended drill life
  • Heavy-duty, single piece construction
  • Core ejection slot allows continuous drilling


Diameter Part #
3/16" (5mm) 166641
1/4" (6mm) 166642
9/32" (7mm) 166972
5/16" (8mm) 166643
3/8" (10mm) 166644
1/2" (13mm) 166645
5/8" (15mm) 166646
3/4" (20mm) 166647
1" (25mm) 166648
1 - 1/4" (30mm) 166973
1 - 3/8" (35mm) 167169