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.Great countrr sink bits
Would RecommendI love these bits. They are strong and last a long time before needing to be replaced.
From 1_SLASH_8-in 1-5_SLASH_8-in High-speed steel Countersink Twist Drill Bit
Works for me.
Would RecommendHelps with accuracy and is very easy to use. I cannot review quality and how long it will last as other reviews mentioned the drill bit will not last.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
holy csks
Would RecommendWorks well. Bought to replace part of kit where pilot drill broke.
From 7_SLASH_64-in 1-5_SLASH_8-in High-speed steel Countersink Twist Drill Bit Verified Purchaser
Tears wood
Would Not RecommendWhen the counter sink part enters soft wood it tears the wood at entry. Not a clean cut
Verified Purchaser
Poor quality
Would Not RecommendThe drill bit is made soft material. Three holes and it bent! I was able to use the countersink adapter on different drill bit. You get what you pay for.
Very poor quality
Would Not RecommendHaving misplaced two vix bits I've had for years, I was happy to locate this one. The older ones were very precise in operation, but this on is simply terrible. The tool wobbles wildly at even low speeds, and the drill bit itself is such a loose fit in the spring-loaded guide that the holes were off-center, the exact opposite of why I purchased this. Best (mediocre) results were obtained by holding the guide with one hand and operating the drill with the other. Do not buy this product.
Broke during first use
Would Not RecommendPoor quality product. The hex portion spun freely after ~10 holes, then the bit snapped off. I'm very disappointed, wish I had read reviews before.
Broke in minutes
Would Not RecommendThe countersink portion of the bit has small, thin metal parts instead of a robust jacket all around the drill bit portion. As a result, after countersinking about 6 holes into a thin acrylic sheet, one of the prongs broke off and rendered the bit useless for countersinking as it became totally unbalanced.
From 3_SLASH_16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit
Junk
Would Not RecommendUsed 3 days on cabinet install. About an inch broke off. I drill part way and then back it out to clear the flutes.
From 3_SLASH_16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Kobalt 7/64-in x 6-in High-Speed Steel Twist Drill
Would RecommendDoes the job when installing new door hinges. Spring gets stuck occasionally from wood down the shaft, pretty east to clear.
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified PurchaserSweepstakes
Like all other Kobalt bits...
Would Not RecommendTHis thing is pure garbage. I drilled 32 holes with it, and the quick attach chuck adapter fell off. I will add that i was using this in pine, so it would have broken much sooner in hardwood. I swore in the past that i would never buy any more of Kobalt’s bits, as all of them have been trash in the past, but i was in a pinch and this was all my Lowe’s had in stock at the time. DO NOT BUY THIS BIT!
Small door hinges
Would RecommendEasy to use for my custom bird cage hinges.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified PurchaserSweepstakes
Just what I needed
Would RecommendWorked great for the little hinges I hung on my custom bird cage.
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified PurchaserSweepstakes