Diamond Coated Glass Drill Bits

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  • How to Drill and Aquarium and install an Internal Overflow

Quick Overview

Save money and time.


Don’t haul your tank all the way to the store to have it drilled. Use our diamond coated glass drill bits.


Drilling glass is actually pretty easy with the correct tools. Diamond coated drill bits will allow you to drill a hole where ever you need in non-tempered glass for bulkheads, or any other plumbing your system desires.


For drill bit and bulkhead compatibility please see Full Details below.

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  • Quick Overview

Save money and time.

Don’t haul your tank all the way to the store to have it drilled. Use our diamond coated glass drill bits.

Drilling glass is actually pretty easy with the correct tools. Diamond coated drill bits will allow you to drill a hole where ever you need in non-tempered glass for bulkheads, or any other plumbing your system desires.

For drill bit and bulkhead compatibility please see Full Details below.

Diamond Coated Glass Drill Bits

97% Recommend this to a friend (143 of 147)

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12 mm Diamond Coated Glass Drill Bit
SKU: 210148
Preferred Reefers earn 45 points
$9.99
 
 
30 mm Diamond Coated Glass Drill Bit
SKU: 203000
Preferred Reefers earn 80 points
$16.99
 
 
35 mm Diamond Coated Glass Drill Bit
SKU: 203003
Preferred Reefers earn 95 points
$19.99
 
 
42 mm Diamond Coated Glass Drill Bit
SKU: 203005
Preferred Reefers earn 105 points
$21.99
 
 
45 mm Diamond Coated Glass Drill Bit
SKU: 203001
Preferred Reefers earn 110 points
$22.99
 
 
48 mm Diamond Coated Glass Drill Bit
SKU: 203006
Preferred Reefers earn 115 points
$23.99
 
 
53 mm Diamond Coated Glass Drill Bit
SKU: 203011
Preferred Reefers earn 120 points
$24.99
 
 
60 mm Diamond Coated Glass Drill Bit
SKU: 203002
Preferred Reefers earn 130 points
$26.99
 
 
65 mm Diamond Coated Glass Drill Bit
SKU: 203007
Preferred Reefers earn 135 points
$27.99
 
 
75 mm Diamond Coated Glass Drill Bit
SKU: 203004
Preferred Reefers earn 145 points
$29.99
 
 
85 mm Diamond Coated Glass Drill Bit
SKU: 203008
Preferred Reefers earn 160 points
$32.99
 

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Product Questions

Can you drill tempered glass with the diamond bits? I have heard not....
Question by: Daniel on Oct 29, 2013 10:04:00 AM
Hi Daniel,
No you cannot drill tempered glass. If your glass is tempered there isn't really any modifications that can be done to it as it will shatter. Fortunately most aquariums do not use tempered glass (though its more common on the bottom panel).
Answer by: Bulk Reef Supply on Oct 29, 2013 10:04:00 AM
I would like to get a couple of drill bits for a 1" bulk head and a 3/4" bulkhead, problem is I don't know what type of bulkheads they are, SCH OR ABH.
Question by: Carlos on Jan 25, 2016 10:35:00 AM
Great question!
ABS is always a black plastic color. Schedule 80 will be gray. In most cases the bulk heads in the hobby are ABS. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Feb 3, 2016 12:09:00 PM
At what point is it needed to a schedule 80 bulkhead? Would this be for return to tank and or overflow too? I am planning a 125 Gal reef tank with two overflows, two returns. Thanks for any help!
Question by: tim bowser on Dec 18, 2016 1:49:00 PM
Great question! The schedule 80 fittings are used for their durability and aesthetics. In most aquarium applications, we do not use high enough pressures to worry about the pressure rating between sch40 vs sch80. :-)
Answer by: Randy (Admin) on Dec 22, 2016 6:53:00 PM
I have a 45mm will it work on a 3/4 sch 80 bulkhead or will it be to big?
Question by: Ryan on Jan 3, 2014 9:38:00 AM
The 45mm drill bit would be the ideal drill bit for a 3/4" sch80 bulkhead.
Answer by: Bulk Reef Supply on Jan 3, 2014 9:38:00 AM
What size bit will I need for 1/2" SCH 80 bulk heads?
Question by: Kendall on Jul 20, 2016 9:10:00 AM
Hi Kendall,
For a ½” Sch 80 bulkhead we suggest using a 35mm glass whole saw.
Answer by: Charlie (Admin) on Jul 20, 2016 12:18:00 PM
How many holes can 35mm and 45mm bit cut before it isn't an idea cutter ?
Question by: Louis V. on Jan 23, 2016 8:15:00 AM
Great question!
You could get around 6 cuts per drill bit before the bit tends to slow down. Feel free to let us know if you have any further questions!
Answer by: Connor (Admin) on Jan 28, 2016 4:06:00 PM
Do these glass drill bits work for acrylic also?
Question by: Barbara on Jan 31, 2014 4:22:00 PM
Hey Barbara,
For acrylic you just need a plain toothed hole saw bit like the set linked below, no need for a diamond coated drill bit.
http://www.bulkreefsupply.com/catalog/product/view/id/386/
Answer by: Bulk Reef Supply on Jan 31, 2014 4:22:00 PM

Full Details

Drill bit & Bulkhead Compatibility

 

  • 12mm Glass Drill bit works with our RO Float Valves.
  • 30mm Glass Drill bit works with our 1/2" ABS Bulkheads.
  • 35mm Glass Drill bit works with our 3/4" ABS Bulkheads.
  • 42mm Glass Drill bit works with our 3/4" heavy duty SCH 80 Bulkheads.
  • 45mm Glass Drill bit works with our 1" ABS Bulkheads.
  • 48mm Glass Drill bit works with our 1" heavy duty SCH 80 Bulkheads.
  • 53 mm Glass Drill bit works with our 1.25" ABS Bulkheads
  • 60mm Glass Drill bit works with our 1.25" heavy duty SCH 80, and 1.5" ABS Bulkheads.
  • 65mm Glass Drill bit works with our 1.5" heavy duty SCH 80 Bulkheads.
  • 75mm Glass Drill bit works with our 2" ABS Bulkheads.
  • 85mm Glass Drill bit works with our 2" Heavy Duty SCH 80 Bulkheads.

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Reviews

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  • Good product. By Shawn O on 5/25/2017

    Drilled 3 holes for the 1" bulkheads and they came out pretty good. One chip where I rushed the first hole. The other 2 holes looked like a pro did them.
  • Michael would recommend this product By Michael on 3/14/2017

    I bought the 65mm to install a shadow overflow on a 150 gal. I was almost certain the side glass was not tempered but I was still prepared to clean up a shattered mess. Good news, two holes drilled successfully! Go slow and let the bit do the work. Watch lots of videos too.
  • Worked Great By Alex on 12/30/2016

    Worked great to cut a hole in my sump for an external skimmer fast and clean and ready for more cuts. used plumbers putty to create a water pool to help cool the bit and painters tape on the other side to catch the glass plug.
  • 45 mm Diamond Coated Glass Drill Bit By William on 11/23/2016

    Exactly as described Great service
  • Amazing drill! 35 and 45mm By Marduk on 11/21/2016

    It was my first time to drill my tank, and this product was easy to work, I recommend it! greetings from México!
  • Dulls quickly By Mack on 9/29/2016

    3/4" bit got dull before finishing the 1st hole through 1/2" glass. Second hole took almost and hour to drill
  • Drilled my first tank! By Dan on 9/9/2016

    I drilled my 40 breeder frag tank with this bit and it worked flawlessly! I couldn't be more happy with the end result. I was very nervous as this was my first time drilling glass but I went nice and slow and used the drill guide which in my opinion is a must.
  • Bits work great By Chris on 9/4/2016

    Drilled two holes with the 60mm and one with the 48mm. Was super easy, had no problems.
  • Definitely Worth It By LogTech on 8/1/2016

    My buddy and I have been reefing together for about 2 years now. We've cut simple tanks, 1/4" glass, but recently, I got a 220 custom tank I needed to drill the bottom for my returns and overflows. Whoever built this thing went nuts and used true 3/4" glass all around, but also inserted a true 1/2" piece of glass on the bottom, including a 1/4" polycarbonate sheet. We got the 48mm bit and went to town. Cut 5 holes through all of it and did an amazing job in the process. Probably used this thing way past its life, but it didn't seem to care.

    If you need to cut some glass, use these bits.
  • Worked great. Reasonable price By Todd on 5/2/2016

    Worked great. Reasonable price
  • Product does what it's designed to do By John on 4/29/2016

    For some reason mine cut a square. Just kidding y'all! I've purchased 3 of these hole saw bits from BRS. They work great and are perfectly priced!
  • Works weill..... By 787will on 4/2/2016

    These work well and BRS always used to be my go to place for glass drill bits but they've recently raised the prices on these by more than 50%!!!! what gives?!?! once again it feels like members of this hobby are being taken advantage of.