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6855 Rubi DRYGRES 4GRINDER Drill Bits

3 Reviews
SKU: 6855
Rubi Tools
$21.14 to $113.39
$21.14 to $113.39

Product Details

Product Details


Dry core bit to drill porcelain, granite and marble 5/8" female arbor, fits on high-speed and variable speed angle grinders. Very fast cutting on granite and engineered stone


  • For drilling of ceramic tile, porcelain and stone
  • 5/8"-11 thread female arbor fits angle grinders
  • Maximum Speed 14,000 RPM
  • Vacuum brazed diamond set in vacuum for greater durability
  • Vacuum brazed bits can be used wet or dry
  • Drill bit body made of highly resistant steel
  • Air cooling slots for increased cooling and core removal
  • Usable with grinder (direct connection) or electric drill (adapter) part no. 05976)

Ratings & Reviews

3 reviews

  • 4 stars
  • 0 reviews
  • 2 stars
  • 0 reviews
  • 1 star
  • 0 reviews
4/10/2017 2:23 pm

Great drill bits to use in the grinder

by Bradley

I used it in the grinder to drill hard porcelain tile and the performance was really good. Very easy to use and cuts look great!

7/2/2018 6:29 pm

Excellent product

by Rob tile

Very impressive drill bits. Fast and last

9/10/2018 11:53 am

Short lifespan

by Ryan

Decent bits, they tend to wear out quickly in porcelain regardless of how fast or slow they are used. Lifespan seems to be 20 holes or less for the 1/4" size.