Mirka 23-615-180 5" 8-Hole 180 Grit Dustless Hook & Loop Sanding Discs - 50 Pack, Gold

The disc are slightly larger than the Bosch OEM ones which is not a bad thing, but that means that the holes do not align anymore. You can see them with my Bosch ROS20VSC. I have have some some Dura Gold to compare with. Otherwise the construction is top notch.

I feel OK recommending these to a friend. I would tell that friend, however, that they work for me and they're decent quality and a good value but not the "best ever" in my opinion.I build furniture for my own use and for family as a hobby. I've been doing this for several years so I have used a bit of sandpaper over that time. But I must confess that I have not used every sandpaper from every manufacturer! I should also confess that sanding and finishing are my least favorite part of the furniture building process. That means I probably change the sanding disc earlier than most since a fresh disc cuts quicker and gets the chore done faster.From that perspective, these Mirka discs work fine for me. They are made of lightweight paper but they hold on to my sander well and I haven't had to replace the disc because it tore or shredded. I replace the disc after I feel they are about 50% to 60% as effective as when I started. I estimate that I go through about 3 of these Mirka discs for the same amount of sanding chore as I would, say, 2 of a 3M sanding discs. So I definitely use more of the Mirka discs than I would a more expensive disc like the 3M brand. But that is no problem for me since the Mirka discs are quite a bit cheaper. I still think I'm spending about the same amount of money by comparison, but I think I get the sanding chore done quicker with the Mirka discs since I'm using a fresh, and sharper, piece of paper more often.Bottom line: They work well for me because I don't worry too much about wearing every last grain of sand off a disc before I change it out. And, given their current price, they are still cost effective for a hobby user when compared to the expensive, premium sanding discs I would get at a big-box hardware store. I have no problem buying more when these are gone. I would give 3.5 stars for quality of the discs and 5 stars for the low price. 4 stars overall since they work well for me!Hope this is helpful.

I really got tired of paying what seemed a ridiculous price for the common 5 packs at the hardware store, so I sought out a bulk alternative. As they say, woodworking is 5% skill, 5% creativity and 90% sanding...so bulk sanding discs are critical to saving money. I searched Amazon to find some compatible 8-hole discs for my Dewalt random orbital sander and settled on these. After using my first pack quite extensively and being pleased with the results, I've now got a stock of almost all the grit sizes. The 50 packs tend to last me quite awhile, depending on the projects I have on hand.Overall, I would say that the performance compared to "name brands" might be slightly less, but then again, the cost is significantly less for these Mirka's, too. At roughly 35-40 cents a piece, I can afford to use another if the project calls for it. The 80 grit paper will remove a fair amount of stock, but you might consider the 60 grit if you have particularly rough surfaces to sand and need the power. I commonly use the 80 grit as my initial attack, unless I'm working with freshly jointed/planed wood where a slightly denser grit is a better first choice. I work with both hardwoods and softwoods and can say these discs do well on both.As for a tip, you'll get remarkably better performance if you hook up your ROS to a vacuum or dust collection system. I can easily say it improves the life of these discs by more than 50%, perhaps as much as 100%. The issue (with all discs) without dust collection is that the dust tends to get stuck in the grit, making a less effective sanding surface over time. When you use dust collection, most of the dust is removed from the sanding surface and you get greater performance over time. You'll also experience a cleaner shop/garage and won't have to spend as much time dusting!I won't hesitate to keep up with my supply of Mirka sanding discs. Pound for sawdust, I don't think there's a better deal out there.

Strong adhesive, they don’t get loaded up, but magically clear and don’t clog with sawdust. These last a long time.

I ordered these solely based on reviews. I ran out of the lower grits of the Mirka discs and, in a time crunch, ran to the big box store to get other sanding discs. I ended up spending as much on 50 of the red resin discs that I did these. I am refinishing a 30 ft long, two story all wood playset and had nothing but sadness once I started sanding with the "other" discs. I could immediately tell the difference between the two which until that point I had been unsure of (it's been a while since I've sanded). The red ones wouldn't hold tightly to the Velcro rubber sander backing. They would slip around and the 80 grit red disc didn't do half the job of the 150 grit Mirka discs I still had. It took far more pressure and time to sand with the red disc with a lower grit than it did with the higher grit Mirka. I also wasn't sure what dustless sanding discs were until having the two to choose between. The amount of dust build up on the wood from the red disc was enormous compared to none from the Mirka discs. Sat on top of the playset and ordered more Mirka discs for rush delivery....that's how much better they are. My only regret is spending the money on those other discs from the big box store. I have a Bosch orbital palm sander and had just replaced the rubber backing so the fact that the red discs wouldn't attach well speaks volumes about their Velcro backing quality. Zero issues with the Mirka discs holding tight.

Excellent quality and variety of grids made that purchase ideal for me.

my second set, but it would be even better with coarser grits like 80 or 60. that said, good value and grit lasts longer than other pads

quick delivery and exactly as described

great

I've used just about every brand of sandpaper out there.. But, mirka seems to be the best, in my opinion.I picked these up after using the mirka sanding mesh (abranet) discs. Which are fantastic, btw! But, they're about X3 more expensive.. So, I was pleasantly surprised to find how great these ones were!They don't tear too easily, or get gummed up. I am happy with how long they last. :)No complaints on these guys at all. Of course the dust collection on the mesh disks is much better. But, the trade off is okay. They don't restrict any more / less airflow than any other disk.Ps: These discs are used on a festool ets ec 125, with a modified sanding pad, to fit standard 8 hole hook & look.