Ratings & Reviews for Kobalt 3/16-in 4.75mm #10 Standard High-speed steel Countersink Twist Drill Bit
Ratings may include incentivized customer reviews.
What Customers Are Saying
The adjustable countersink drill bit is generally well-received, with users praising its convenience and effectiveness in producing clean, even holes. Key features include the adjustable collar for controlling depth and the combination of drilling and countersinking in a single step. However, some users have reported concerns about the bit's durability and longevity, with issues like premature breakage or dulling, as well as difficulty finding replacement bits.
Customer review summary generated by AI, including incentivized reviews.I like the tools
Would RecommendI was surprised there was an employee who knew exactly what I was looking for, and actually helped me out.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Broke
Would Not RecommendIt broke almost immediately. I was very Disappointed in the product.
From 11_SLASH_64-in 4.35mm #8 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser
Improves hinge installation precision
Would RecommendGreatly reduced the time and difficulty in installing a 6' piano hinge
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Work Great But
Would RecommendThese really work great but it is easy to brake the bit or when it wares out it is VERY difficult to find replacement bits that are long enought to work in the device. I have 3 of them on my work bnech in just that condition!!
The tip wobbles, making it very difficult to center the drill bit, which is the whole point of the item. Readjusting in the chuck does not help.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
2nd One broke
Would RecommendBought One drilled maybe 100-150 holes and then the hex collar started slipping so i returned it got another and the same thing happened
Wobbles
Would Not RecommendThe whole purpose is to drill a straight pilot hole, this wobbles when spun. Finish will also rust quickly. You get what you pay for, buy the bosch instead
From 7_SLASH_64-in 6-in High-speed steel Self-Centering Hinge Bit Verified Purchaser
Broke On First Use
Would Not RecommendBroke on first use, so will be returning for refund.
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit
Does not spin straight
Would Not RecommendI tried one of these today. Did not spin straight in the drill nor in the driver. Tried rotating and adjusting everything on the device to no avail. One could describe it as a wobble. It appeared the part locking in the chuck was not in a straight line with the part holding the drill bit. It would have ruined my work had I tried it there. Next try will be with a US made product. It got returned the same day it was purchased.
From 5_SLASH_64-in x 6-in High-speed steel Self-Centering Hinge Bit
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
From 9_SLASH_64-in 3.55mm #6 Standard High-speed steel Countersink Twist Drill Bit Verified Purchaser