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7/64-in 1-5/8-in High-speed steel Countersink Twist Drill Bit

Ratings & Reviews for Kobalt 7/64-in 1-5/8-in High-speed steel Countersink Twist Drill Bit

4.1
384
Review
 4.1 out of 5
384 Reviews


75% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

This adjustable countersink drill bit offers versatility with its 3 interchangeable bits to accommodate a range of screw sizes. The adjustable collar allows users to easily control the depth of the countersink, and the self-centering design helps produce accurate, professional-looking results. However, some users have reported issues with the drill bits breaking or wearing out quickly, especially on harder materials, and the set screws may loosen during use, causing instability. Replacement bits can also be difficult to find. With proper care and maintenance, this tool can be a useful addition for DIY projects and light-duty work.

Customer review summary generated by AI, including incentivized reviews.
384 Customer Reviews

Good quality bit.

Would Recommend

Good bit. Works well. Stays sharp.

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Good

Would Recommend

Works like it should

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Just a bit

Would Recommend

Makes a nice clean counter sink hole.

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Good to have

Would Recommend

This is the size I use most frequently, so I’m glad to buy it individually.

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Works well. This is the one you wanted.

Would Recommend

No dislikes

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Nice bot

Works liked planned

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Great tool

Would Recommend

Works great

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Speed and Precision.

Would Recommend

Bit has a good point for precise drilling. Fast starting, bit cleans well. Would be nice to have a stop on the countersink.

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Countersink

Would Recommend

Stocking up on drill bits for upcoming project and needed the countersink. Product is great.

April 23, 2026
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
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