CBRIGHT Sharpening Stone Set - 3pcs Pocket Size Whetstone Set Knife Sharpener Grinding and Polishing Polishing Assorted Size Oil Stone (8000#-10000#,800#,320#)

These perfect stones for Hapstone R2 Black or any of their systems for that matter, TSprof systems, KME or any system that uses a universal type stone holder if it only uses the 1x6 edge pro type stones with the 45 degree bevel on the ends of the plate then it won't work.These are to small for hand sharpening (it can be done but for my free hard sharpening I use Venev 8x3 inch stones, 8x3 Shapton glass plates, Chosera 8x3 and DMT 8x3 and 12x4s I hate free hand sharpening on anything smaller then a 6x2 and much prefer 8x3 and larger) and designed for KME as they use 4x1 inch stones but many systems can use 4 inch up to 8 inch stones such as my Hapstone R2 Black and my TSPROF K03.I tested these out on my R2 black with some basic 8cr13mov steel on a Gerber cheapy to see the scratch pattern and overall stone preformance.The 320g is true to the FEPA F rated stones, the scratch pattern is what I would expect for a 30 micron stone (29.2 micron +-1.5 is FEPA F320 grit) and that's right where that stone is. It's not nearly a course enough stone to cut even 8cr for reprofiling.. it will cut but it's not going to cut fast, it cuts how I would expect a 30 micron stone to cut (this set really needs a 150g/100 micron stone for fast cutting/stock removeal) that'd perfect so long as you aren't reprofiling or trying to remove chips in a blade as if you are your going to be going at it for a while, 30 micron just isn't going to cut super fast. This stone loads up super fast when used with honing oil but does just fine with water mixed with dawn dish soap. With harder more wear resistant steels load up will happen but not as quickly as it was for me however I wouldn't advise using oil no matter what steel you are sharening the water+dish soap will slow stone loading by a huge amount.The 800g scratch pattern is more in line with what I would expect from an F500g/13 micron stone. Cuts like a 13 micron , remove steel just like a decent quality 13 micron Silicon carbide stone would be expected to, this stone loads up VERY quickly using honing oil and does much better with water mixed with dawn dish soap, load up happens much much slower with the water and dish soap so I would advise to not use oil with this stone nor the 320g stone.The pictures of the scratch pattern are of the 320g and the 800g. I didn't take pics of the 8000/10,000 stone because the stone progression will just cause a hazy mirror. The "8000" can't remove the scratch pattern from the 800 it's far to large of a jump so it would he pointless to show the progression past the first two stones.Now what I did do is took an edge across my Shapton Glass stone progression and stopped on the 4 micron/3700 grit stone then used the 8000g white stone from this set and it left a scratch patterned just like the 2 micron Shapton glass stone would leave and that's roughly 7000 grit on the JIS system or 1500 of the FEPA F system so them saying its 8000g is fairly accurate. It left me a bright near mirror bevel with a very consistent scratch pattern telling me the abrasive in the stone is consistent with no large variations in abrasive sizing. The scratch pattern was very good.Flipped it to the 10k stone side and ended up with a scratch pattern that I would expect from a Shapton glass 1.2 micron/JIS system 11,000 grit scratch pattern. It left me with a full bright mirror bevel that was fairly consistent with a stray larger/deeper scratch here and there but decent scratch pattern consistent with a decent quality stone. To the eye it's a full bright mirror, the stray scratches needed a 30x magnified loop to see so to the naked eye it left a perfect full bright mirrored bevel and whittling hair directly off the stone.I took the edge to a horse butt leather strop with 2 micron diamond emulsion (this was to clean up the stray scratches the finest stone left or i would have went directly to 0.5 micron CBN emulsion) then i went to Jende Nanocloth strops in 2, 0.5, 0.25, 0.1 micron loaded with 1, 0.5, 0.25 and 0.1 CBN Emulsion. After the strop progression I had a perfect mirrored bevel and a perfect scratch pattern when checked under a 90x magnified loop. It's flat insane when a stone set that cost 15 bucks comes with a pair of stones that are capable of giving complete full mirror bevels with fairly consistent scratch patterns. Will it leave a good a finish as my shapton glass stones, Venev bonded diamond or my metallic bonded CBN stones? No it will not however those stones are 200 to 300 dollars EACH. so when a stone included in a 16 dollar set is capable of leaving 95% the edge quality and edge finish a 250 dollar 1.2 micron Shapton Glass plate leaves is beyond impressive and frankly unbelievable. It will take you longer to get that finish then the premium stones but it'd capable of it none the less and with the few stray scratches aside it's dang near a perfect 11,000g edge and from a stone that's in a 16 dollar set. For good working edges the 320 and 800 are perfect, if you have some higher grit stones already but not high enough grit to get a mirror the 8k/10k stone will complete the progression and give you results capable of full mirror edges.The pics of of full mirrored edge I did are on a Custom Benchmade Bugout that's DLC coated and in S90V steel.One last thing. The 8k/10k stone is the only stone in this where using oil is a must. The soap and water will cause the stone to burnish quickly and require you to hit it on a dressing stone (I just used a DMT Dia-Sharp plate in 9 micron to dress the 8k/10k and I used a DMT Dia-Sharp plate in 25 micron stone to dress the 320 and 800 and it took about 10 secs to do each stone) and it will burnish again nearly instantly if your using soap and water. I tried honing oil and didn't like the feel/feed back I was getting so I swapped over to mineral oil and BINGO no load up, no burnishing and I could feel what the stone was doing on the steel perfectly. The 8k/10k will not absorb the oil so it's simple to wipe it off after your done so no storage mess. A drop on the stone spread it around and start sharpening. When you start to feel like a very and I MEAN VERY slight chattering feeling when sharpening it's time to add a tiny bit more oil. I had to reapply a drop of oil about 3 times while doing the bugout.The 320 makes very little slurry, the 800 makes some slurry but not a lot and the 8k/10k makes hardly any slurry. So don't expect it to.The 320 and 800 are worth the 16 dollars for normal EDC knife and kitchen knife sharpening they are capable of putting a hair whittling edge on a knife they also will sharpen even the hardest steels, Silicon carbide will cut pretty much any steel out there no problem.The 8k/10k mirrored S90v no problem (S90v is a insanely wear resistant super steel, if a stone will handle S90v it will handle any steel)If you don't have a progression of higher grit stones to get you up to where the 8k/10k will do its job for you then the 8k/10k is kinda pointless. You could use it to deburr on if you just use the 320 and 800 but forget about getting a mirror edge off this set without a progression to get you up to around 3000 grit minimum so the 8k can remove the scratch pattern the 3k leaves behind.Overall this set is unbelievably good for the cost, you get two stones that will give you fantastic toothy edges for your EDC knives and you have a polish stone capable of leaving FULL BRIGHT mirrored edges.These stones was also nearly perfectly flat out the box. I did lap the 320 on 80g SIC powder on a glass plate to completely level it as it was ever so slightly out of level but that's just me doing it because I have the equipment to do it, it was perfectly usable as it was. The 800 and 8k/10k was perfectly level out the box.The first two pics of the mirror edge the pics you can read satisfaction part that is straight off the 10k stone... the next two where you can read the 100% that's after stropping. As you can see the finish off the stones was a complete full mirror, after stropping it is an ever so slightly brighter complete mirror bevel.

Not bad...a bit small but OK for the armchair knife enthusiasts... if your seriously into steel then get a better kit than these...don't get me wrong they do the job but bit small and finicky

Bought this set for work. Durability is not the best, but they seem to work very well for what I'm doing at the tool shop. Would buy again!

I bought these stones only the sharpen a badly nicked up pocket knife I use to open mail etc. These things surprised me, I wound up using them on several knives. I sharpened an old Swiss Army knife to near razor sharp in only about 20 minutes.Okay! First of all they're kinda small; I have no problem w/ that but some might. (depends on perfectionist level & various possible OCD factors) I like them just fine, but I'm good at sharpening knives, some might not be. I've been doing it since a teenager.The stones themselves are actually 4 stones but in 3 pieces.. 320 for rough profiling damaged blades or nicked edges, 900 (boron) is great for basic all around sharpening, then a dual sided ceramic stone 8k & 10k for finishing a very fine edge. The 8k/10k dual sided stone may be for only very steadfast discriminating people desiring a near or actual razor sharp edge. In most cases it's overkill but nice if you know how to do it. The 900 boron (black) does a great job for 98% of the needs for most people; no need to polish a canonball it works fine pretty rough.With the 320 red stone to rough out an edge those 2 stones might be all you need or want. I like to use the 8k/10k to polished the edges a bit, but I don't dwell on it that much. I also use a leather strop which acomplishes the same thing more or less as the 8k/10k combo stone.These are great whetstones. They may be used dry, but they work much better and last longer used in oil or in water. Some people swear by oil, I used to like it too, until I realized it's way too messy. Water mixed w/ a tiny bit of Dawn dish soap & maybe 20% baby oil (optional) does the same thing as mineral oil with far less mess.I suggest storing these stones wet, in a plastic sandwich bag or in a small container so they're ready to go. Keep them really well soaked while using them too. You'll see how good it is over dry sharpening. But if you don't store them wet you'll have to soak them for 5-10 minutes before commencing use.They work well and do the job just fine, if you don't mind them being small.

Zero complaints, these work quite well.