Ratings & Reviews for Kobalt 9/64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit
Ratings may include incentivized customer reviews.
What Customers Are Saying
The adjustable countersink drill bit is a versatile tool that can accommodate a range of screw sizes and allows for controlled depth adjustment. It works well on softer materials like wood and composites, but the countersink heads may wear out over time. The main strengths are its convenience and ability to drill and countersink in a single operation, making it useful for projects like cabinet and furniture installation. However, some users have reported issues with the drill bit breaking or becoming loose, especially when working with harder materials, and replacement bits can be difficult to find. Careful use and maintenance are recommended for optimal performance.
Customer review summary generated by AI, including incentivized reviews.Wobbel
Would Not RecommendThe bit does not spin true so it is impossible to hold the guide in the hinge hole to drill. Poor, poor quality. I'm going to attempt to return it today, which may prove interesting.
Bit does not rotate as expected
Would Not RecommendThe retractable centering sleeve was out of center so that it wobbled slightly as the bit rotated. The result was when used to drill a centered pilot hole the wobble caused the aciual 5/64 bit to break.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Got 4 holes drilled!
Would Not RecommendDrilled 4 holes before the tip broke off. Mind you I am a woman with arthritis and the only other bit I’ve broken was a 1/8” drill bit I got at that freight store after drilling about 100 holes (maybe more, used on multiple occasions). I didn’t apply much pressure, to my DH’s dismay, and it still broke. I doubt he would have gotten one hole done before it broke! Even he was surprised it broke with how little pressure I applied! I did not bend or try to angle the bit while in the hole, it was go...
Buy something else
Would Not Recommendshank breaks and spins without the bit turning
From 3_SLASH_16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Find something better
Would Not Recommendshank breaks and spins without the bit turning
From 11_SLASH_64-in 4.35mm #8 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Works
Would RecommendWorks - only wish is that I could’ve found the adjustable depth version.
From 3_SLASH_16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Works
Would RecommendOnly wish is that I could’ve found the adjustable depth ones.
From 11_SLASH_64-in 4.35mm #8 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Professional look
Would RecommendThis made building my tv stand look so professional.
From 11_SLASH_64-in 4.35mm #8 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Broke on 3rd hole
Would Not RecommendI drilled 2 holes in a board and on the third hole, the hex shank spun off the bit and made it worthless. I was very disappointed as I only bought one and had to drive 30 minutes one way to get a different brand. This delayed my project which was frustrating.
From 3_SLASH_16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Poor quality
Would Not RecommendThis bit strips out where the hex shaft and bit attach and comes apart. The tip breaks easily as well. Other brands I have used don't do that.
Reasonably priced and works right.
Would RecommendInexpensive self centering 5/64 drill bit. Great for pre-drilling a flat head small wood screw.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
All 7 pcs are defected. They will trembling when using. Your website can only upload picture, but I have one video on hand if you want to see it for reference. Also, it's not friendly for the return. Cannot get any label or barcode till over ten times try.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified PurchaserVerified Pro