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.Adjustable drill bit length is easy to change.
Would RecommendAdjustable drill bit is easy to change the length of the hole it drills. I have had some that the set screw was hard to adjust and would not hold drill bit in place.
From 7_SLASH_64-in 1-5_SLASH_8-in High-speed steel Countersink Twist Drill Bit Verified Purchaser
Auto-Center your pilot hole.
Would RecommendWorks great at centering your pilot hole in things like hinges.
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Broke too easily
Would Not RecommendI'm not sure I drilled more than 20 holes with this before it broke.
This product will break
Would Not RecommendThis was a cheap product so I bought two. Both broke. I bought a more expensive brand its working swell
Verified Purchaser
Self centering bits
Not very durable. After setup and tightening the set screw, the bit still came loose with light duty usage.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Good to anpint
Drilled well but came apart. The allen set screw let’s you put bits in, but this bad boy fell apart with the reamer coming from of the shaft. No way to taste it back n
Verified Purchaser
If you need to do a single hinge it’s worth it
Would RecommendYou can’t go wrong. Excellent asset if you do any type of door hardware hinges etc. would buy again.
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Does not center consistently
Would Not RecommendThe centering mechanism is inconsistent. The shaft that houses the bit moves laterally. You have to look at the bit within the shaft before starting to drill to make sure it is centered. It seems to be a design issue and not a quality problem with the particular bit I received.
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser