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TattyBear | Staff 22.6K Views
Nov 25, 2022 6:17 PM

4-Piece BOSCH SP515 Hex Shank Countersink Drill Bit Set (6, 8, 10, 12)

$14

$17

17% off
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Deal Details
Amazon has 4-Piece BOSCH SP515 Hex Shank Countersink Drill Bit Set on sale for $13.80. Shipping is free w/ Prime or on $25+ orders.

Thanks to Deal Hunter TattyBear for sharing this deal.

About this Item:
  • Bosch hex shank countersink bits feature adjustable depths and provide precise, clean pilot holes in wood, plastic and composite material
  • Countersink and Counterbore in one step
  • For use with Allen wrench (included in set); the hex shanks fit 3/8 in. and 1/2 in. corded and cordless drills
  • Included Sizes #6, #8, #10 and #12

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by TattyBear | Staff
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Amazon has 4-Piece BOSCH SP515 Hex Shank Countersink Drill Bit Set on sale for $13.80. Shipping is free w/ Prime or on $25+ orders.

Thanks to Deal Hunter TattyBear for sharing this deal.

About this Item:
  • Bosch hex shank countersink bits feature adjustable depths and provide precise, clean pilot holes in wood, plastic and composite material
  • Countersink and Counterbore in one step
  • For use with Allen wrench (included in set); the hex shanks fit 3/8 in. and 1/2 in. corded and cordless drills
  • Included Sizes #6, #8, #10 and #12

Editor's Notes

Written by SaltyOne | Staff

Original Post

Written by TattyBear | Staff

Community Voting

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Top Comments

Dllemm
1KComments
80Reputation
Pre-drilling 2 pieces of wood before securing them with a screw so you don't split the wood. The shaft is shaped so that the screw head will be inset and flush with the wood.
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timswim78
133Comments
125Reputation
I would stick with the Bosch set. They are an established brand. The cheaper, no name Amazon brands have less quality control and are likely to come dull or not sharpened well.
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13 Comments

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Nov 26, 2022 2:39 AM
74 Comments
Joined Aug 2011
rajakaaliNov 26, 2022 2:39 AM
74 Comments
amoolo 10-Pack Countersink Drill Bit Set with 1 Free Hex Key Wrench, 7 Pcs High Carbon Steel Countersink Drill Bits for Wood, 3 Pcs Hex Shank Wood Countersink Bits (1/2" 5/8" 3/4"), Woodworking Carpentry Reamer https://a.co/d/auNRo0T

Are these better for the price??
Nov 26, 2022 3:09 AM
133 Comments
Joined Oct 2017
timswim78Nov 26, 2022 3:09 AM
133 Comments
Quote from rajakaali View quoted comment :
amoolo 10-Pack Countersink Drill Bit Set with 1 Free Hex Key Wrench, 7 Pcs High Carbon Steel Countersink Drill Bits for Wood, 3 Pcs Hex Shank Wood Countersink Bits (1/2" 5/8" 3/4"), Woodworking Carpentry Reamer https://a.co/d/auNRo0T

Are these better for the price??


I would stick with the Bosch set. They are an established brand. The cheaper, no name Amazon brands have less quality control and are likely to come dull or not sharpened well.
Nov 26, 2022 3:15 AM
425 Comments
Joined Dec 2007
euuser288937Nov 26, 2022 3:15 AM
425 Comments
Quote from rajakaali View quoted comment :
amoolo 10-Pack Countersink Drill Bit Set with 1 Free Hex Key Wrench, 7 Pcs High Carbon Steel Countersink Drill Bits for Wood, 3 Pcs Hex Shank Wood Countersink Bits (1/2" 5/8" 3/4"), Woodworking Carpentry Reamer https://a.co/d/auNRo0T

Are these better for the price??
No, they have no shaft and aren't Bosh quality
Nov 26, 2022 7:13 AM
770 Comments
Joined Dec 2008
ryanrealestateNov 26, 2022 7:13 AM
770 Comments
New to tools. What do these do?
Nov 26, 2022 7:20 AM
1K Comments
Joined Jan 2017
DllemmNov 26, 2022 7:20 AM
1K Comments
There is a more expensive but significantly improved version of this.

Adjustable Countersink Drill Bit, Self-Adjusting Depth Control Without Wrench, Preventing Scratches Or Marks by Stopper Mounted Bearing, Tungsten Carbide Tipped Counterbore - 1/8"x5/16"(3x8mm) https://a.co/d/74ftzAo
1
3
Nov 26, 2022 7:22 AM
1K Comments
Joined Jan 2017
DllemmNov 26, 2022 7:22 AM
1K Comments

Our community has rated this post as helpful. If you agree, why not thank

Quote from ryanrealestate View quoted comment :
New to tools. What do these do?
Pre-drilling 2 pieces of wood before securing them with a screw so you don't split the wood. The shaft is shaped so that the screw head will be inset and flush with the wood.
3
Nov 26, 2022 3:52 PM
328 Comments
Joined Mar 2013
jwhzgNov 26, 2022 3:52 PM
328 Comments
Quote from Dllemm View quoted comment :
There is a more expensive but significantly improved version of this.

Adjustable Countersink Drill Bit, Self-Adjusting Depth Control Without Wrench, Preventing Scratches Or Marks by Stopper Mounted Bearing, Tungsten Carbide Tipped Counterbore - 1/8"x5/16"(3x8mm) https://a.co/d/74ftzAo
Buy "Shopping land" brand stuff at your own risk. Looks like Chinese junk
1

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Nov 26, 2022 8:47 PM
192 Comments
Joined Jan 2013
atxlonghornNov 26, 2022 8:47 PM
192 Comments
Quote from jigga_what View quoted comment :
Buy "Shopping land" brand stuff at your own risk. Looks like Chinese junk
From Amazon"
"Country of Origin ‏ : ‎ Korea, Republic of"

May not be as junkie as you think. One Amazon reviewer wrote: "I was on the fence about buying this because of the price but they kept popping up on different YouTube woodworking g channels..." But I only found 1 short video on TY https://www.youtube.com/shorts/VY1hYrIFB7U

It actually looks very useful.
1
Nov 26, 2022 9:22 PM
213 Comments
Joined Dec 2005
AJollyNov 26, 2022 9:22 PM
213 Comments
Quote from Dllemm View quoted comment :
There is a more expensive but significantly improved version of this.

Adjustable Countersink Drill Bit, Self-Adjusting Depth Control Without Wrench, Preventing Scratches Or Marks by Stopper Mounted Bearing, Tungsten Carbide Tipped Counterbore - 1/8"x5/16"(3x8mm) https://a.co/d/74ftzAo
That only has a single size, and the reviews suggest it doesn't work well if you want a shallow hole
Nov 29, 2022 8:29 AM
1K Comments
Joined Jan 2017
DllemmNov 29, 2022 8:29 AM
1K Comments
Quote from jigga_what View quoted comment :
Buy "Shopping land" brand stuff at your own risk. Looks like Chinese junk
The point is that the adjustable depth stop bearing is a modern design that is solid and repeatable. The first time you use it you will face palm on how clever it is. Especially in my case having used countersinks for decades.

With free hand it's hard to be consistent, especially in softer wood. This is a time saver if you are looking for repeatable results, especially for larger projects. If you don't like it, return it.
Last edited by Dllemm November 29, 2022 at 02:03 AM.
Nov 29, 2022 8:36 AM
1K Comments
Joined Jan 2017
DllemmNov 29, 2022 8:36 AM
1K Comments
Quote from AJolly View quoted comment :
That only has a single size, and the reviews suggest it doesn't work well if you want a shallow hole
Most wood screws are the same size, just different lengths. But that is a limitation.

It may be best for most to stick with the Bosch countersinks for infrequent use. The tool I linked to takes the guess work out if you think you'll get a lot of use out of it. An analogy would be using a torque wrench to change a car tire rather than tightening your lug nuts "snug". Both work, one gives more feedback.
Last edited by Dllemm November 29, 2022 at 02:02 AM.
Dec 1, 2022 10:51 PM
1.9K Comments
Joined Jan 2004
morbieDec 1, 2022 10:51 PM
1.9K Comments
Quote from Dllemm View quoted comment :
Pre-drilling 2 pieces of wood before securing them with a screw so you don't split the wood. The shaft is shaped so that the screw head will be inset and flush with the wood.
The same thing can be achieved with just using a larger drill bit and only drill in enough so the screw head is flush right?
Dec 2, 2022 3:00 AM
948 Comments
Joined Aug 2012
riffdexDec 2, 2022 3:00 AM
948 Comments
Quote from morbie View quoted comment :
The same thing can be achieved with just using a larger drill bit and only drill in enough so the screw head is flush right?
Definitely can do that, but the feature these bits offer is more of a convenience thing.

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