Customer Rating: 
Summary: Great value and good quality
Comment: These sanding discs are a great value, best disc I have found at this price. Seem to last as long or longer than much higher priced discs. the hook & loop surface has great gripping strength, never had one come loose from sander.
Customer Rating: 
Summary: Good product but nothing special compared to others.
Comment: I bought the assortment pack as well as 120 and 220 grits in preparation for refinishing my kithen cabinets. I have used the 80 and 100 grit from the assortment pack and find them quite acceptable. However, I don't see much difference between this brand and the Norton abrasives brand I can buy at Home Depot. Packs of 50 are almost $10 in the store, Mirka are around $8 per 50 sold in 100 packs. Once you add shipping, unless you buy a large quantity, you're not saving anything. I disagree with one of the other reviewers that said Norton brand discs are thinner and ware out faster. I couldn't notice any appreciable difference between Nortons and Mirka's disc thickness. The abrasive is aluminum oxide for both.
Customer Rating:
Summary: Good Sandpaper for ROS
Comment: Mirka sandpaper is a good value, with a large pack and quality product. Discs hold to hook and loop sander just fine. Quantity is good size, and price is decent.
Customer Rating:
Summary: These ARE a great value!
Comment: First of all I have to say that the reason why I happen to be writing this review is because I was on Amazon ordering another box of these sanding discs! There is no higher praise in my book than a return customer!
Now for the review: I have to agree with the other positive reviews and say that I have long been a fan of these Mirka sanding disks. I am a home woodworker whose projects range from DIY stuff around the house, to refinishing, to building fine furniture projects. I have been using these discs for years (in every grit from 80 to 220) and could not be more pleased with the smooth surfaces they produce with my rather inexpensive sander.
I completely agree with the assessment that although these are not the absolute best hook and loop discs on the market, they have performed every task I have asked of them. Overall, I would give this product an A- for quality/performance, and an A+ for value.
Customer Rating:
Summary: Good Quality, Great Value
Comment: I have purchased every grit of Mirka sanding disks from Amazon, and I find them to be good quality. The price per disc works out to be a great value if you purchase them in packs of 50.I used these disks on my Bosch random-orbit sander. The hook-and-loop backing is strong and holds on through rough sanding. The aluminum oxide sanding material lasts for a good amount of time. I've used them on a variety of wood surfaces, and I have used them to remove paint, and they last long enough to take down a lot of material. I have bought other brands of sanding discs that do last longer, but the Mirka discs definitely hold up well.
The discs are packaged in a sturdy box with a cover, which makes it easy to dispense them as needed. Also, having them stored in a box keeps them clean, which helps the hook-and-loop function. This actually helps out a lot in the shop. Other brands come wrapped in plastic, and you have to find a container for them, or let them sit on a shelf and get full of sawdust. I appreciate this extra touch.
The paper stock is somewhat thin, but this does not really affect their use. Since they are stored in a box, they stay flat. Other brands, which are stored in bags, get curled up on the edges.
Bottom line: these are good quality sanding discs that last for a good amount of time, are a good value for the money, and are packaged in a convenient way.
