45mm or 1-3/4″ Diamond Drill-Sink Drain Bit

(1 customer review)


Drill 1-3/4″ or 45 mm hole in glass easily. This bit is perfect for drilling an opening for glass or vessel sink bowls. Can be used in a hand drill or drill press. Diamond Drill Bits must be kept wet while drilling.

9 in stock

Shipping and Refund Policy
SKU: 1-3/4" Diamond Drill Bit (45 mm) Category:


This diamond-impregnated core-style drill bit features superior long life and is ideal for drilling in both flat and contoured surfaces. Diamond grit is a full 360-degrees around the the bit. Slots on the side of the bit allow the removal of glass dust from inside the bit. These bits can be used on glass, ceramic wall tile, glass block, glass bottles and jewelry.

  • Drill holes in both flat and contoured glass
  • Diamond-impregnated cutting bit for long life
  • Slots on the side of the bit allow the removal of material
  • Ideal for decorative projects including glass blocks or glass bottles

The diameter listed is the size of the hole drilled. However, it is somewhat nominal due to the fact that the diamond grit is plated on the bit. Sometimes the layer is slightly thicker, as it wears, the size gets slightly smaller. Drilling technique can also be a factor, since you are really grinding, not drilling. Final hole size could vary perhaps + or – 1-1.5 mm overall with all the factors considered. Bits must be kept wet while drilling

Additional information

Weight 1 lbs
Dimensions 5 × 3 × 2 in

1 review for 45mm or 1-3/4″ Diamond Drill-Sink Drain Bit

  1. Tom Andrade (verified owner)

    When I receive the drill, then I’ll use it and write a review. Until then, one star for delivery, which is the issue.

    • Marilyn Trebacz

      Your order went out the day after you ordered the bit. I’m sorry the delivery has been a bit slow with the postal system of which we have no control.

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