2Pcs 5/8"-11 Core Drill Bit Adapters with Centering Pilot Bit

Item was as advertised

Worked well for me. Seems a little light duty but I had no problems with them. One time purchase for me.

Good quality

While I have no issue with Core drill bit adapters - they worked fine , the pilot 11.81" bit is complete garbage - it could not go trough brick - had to remove it and go without a pilot. If you are getting this for a pilot bit - get something else.

Well packaged and great quality!

This is definitely one of those small little adapters everybody should have but nobody ever does. Nice strong steel with well cut threads made it easy to put onto my larger core drill bits. It fit the SDS perfect it fit the core bit perfect and it worked and functioned exactly as it was meant to. One thing I can say is that after it's threaded onto a core bit it's almost impossible to get back off, but for the cost it would be easy to order one for every core bit that I have. If there was one take away from trying this, it would be to just order one for every core bit that I have, and not try to swap this between core bits. They're not that expensive and that saves you hunting around for one.

BACKGROUND This came up as a Vine suggestion and it looked like it might be useful, so I agreed to review it. My angle grinder does not have a variable speed on it, but my drill does. Sometimes, I need to cut a hole in a material where a slower speed would be more appropriate, so I thought this might work for me. INITIAL OBSERVATIONS Manufacturing quality is acceptable. The threads screw onto the core drill bits that are for an angle grinder and fit securely. I did not notice any obvious defects during the initial examination of the product. The center drill bit that comes with it is for masonry. If you are needing to cut steel, you should consider replacing it with a similar diameter drill bit for cutting steel (if your core drill doesn't already have a center drill). COMPLAINTS / ISSUES No complaints about the actual product itself, but my idea to use the core drills at a slower speed does not work that well on some materials -- the core drill ends up skipping all over the surface of the material instead of cutting a hole when the situation requires you to not use a center drill. But, that is not a fault of this product. IMPRESSIONS The product does what the ad says it should do. Whether you *should* use a drill as a replacement for an angle grinder for a hole saw is going to depend upon the material you are cutting and your own specific situation. You'll learn quick enough though which materials work with this type of setup and which don't. CONCLUSION The product meets the specifications in the ad and I can find no fault with the product itself. The only "fault" was in my initial assumptions that I could use a diamond core drill bit for boring a hole in wood around a nail that was already in the board. Although it does work, it is more of a *burning* of the wood than a cutting of it. But this is not a fault of the tool -- it did exactly what I *told* it to do. Unfortunately, what I *told* it to do was not a particularly good idea. Oh well... The product itself rates "slightly above average" (i.e. 3.5-stars). ORIGINAL AD DESCRIPTION 2Pcs Core Drill Bit Adapters 5/8"-11 with 11.81" Pilot Bit, SDS-Plus Adapter & Hex Shank Adapter for 5/8-11 Threaded Drill Bits, Centering Pilot Bit for Dry Core Bit $22.99 STAR RATING SCALE 5.0 Excellent product (or perhaps customer service); There is NO room for improvement whatsoever; NOTHING is perfect, so this rating *should* be EXTREMELY difficult to achieve. 4.5 Very above average 4.0 Above average product; Something about it sets it a bit above similar products on the market. 3.5 Slightly above average 3.0 Average product; Meets expectations, perfectly serviceable, but does not do anything that sets it apart from similar products; Does not have some features that makes me say, "Wow, that's a neat feature". 2.5 Slightly below average 2.0 Below average product; Something about it is a bit lacking; It could be conflicted specifications or errors in the original listing or that it was arrived with damage that was unlikely to have occurred during shipping and should have been caught in either the manufacturer's or seller's quality control. 1.5 Very below average / slightly poor 1.0 Poor product; Waste of money at ANY price; Blatant lies in the original listing. 0.0 Extremely poor product; doesn't work and seller either ignores contact attempts or takes an extremely long time to respond, possibly trying to run out the window for returning a product; possible scam seller; a seller or product has to screw up *really* bad to get this score ǝuᴉʌ/ʇǝu.sɔ-ɥs.ʍʍʍ :ORDERED:2024-10-17 :RECEIVED:2024-10-21 :REVIEWED:2024-10-21 :ASIN:B0CWQWW428

This was delivered without the SDS-Plus arbor. I returned it.