Benchmark Abrasives 4.5" x 7/8" Premium Zirconia Type 29 Flap Disc Grinding Wheel for Angle Grinder - 40 Grit Professional Metal Sanding Tools (100 Pack)

cheap and durable. effective.

I recently had the opportunity to test the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs, and I am thoroughly impressed with their performance and durability.The first thing that caught my attention was the build quality. These flap discs are well-crafted with precision, and the high-density jumbo zirconia material used ensures superior strength and longevity. The 4.5" size and 7/8" arbor make them versatile and compatible with a variety of angle grinders.What sets these flap discs apart is their exceptional abrasive power. Whether I was working on metal or wood, the Benchmark Abrasives discs exhibited consistent and aggressive grinding action. The Type 29 design further enhances their versatility, allowing for smooth contouring and blending on different surfaces.Durability is a key factor for me when it comes to abrasive discs, and I am pleased to say that these flap discs exceeded my expectations. The zirconia construction not only delivers powerful abrasion but also ensures a longer lifespan compared to standard discs. This longevity translates to cost savings over time, making them a practical choice for both DIY enthusiasts and professionals.Another notable feature is the efficient heat dissipation. Even during prolonged use, the Benchmark Abrasives flap discs maintained their effectiveness without overheating. This is crucial for achieving consistent results and prolonging the life of the discs.In conclusion, the Benchmark Abrasives 4.5" x 7/8" Premium High-Density Jumbo Zirconia Type 29 Flap Discs are a top-notch choice for anyone seeking reliable and high-performance abrasive discs. Their durability, versatility, and efficient grinding action make them an excellent investment for various applications. I highly recommend these flap discs to fellow craftsmen and DIY enthusiasts looking for a superior grinding experience.

work as they should. Do a good job and hold up well.

I do use a lot of these type of sanding disc and have used many brands. These discs are good and thick with 5 layers. Many discs on Amazon or Harbor Freight are very thin with just 2 or 3 layers of abrasive sheets stacked together. Pay close attention to the number of layers looking at disc wheels from the side. From a vertical line count the layers. The more layers there are, the longer they will perform better as they wear down through the disc. The cheapie ones have 3 and the higher quality ones have 5 or more layers. Also compare the cloth thickness of the layers. For many discs on the market the price is all over the place. Ranging from $3.50 to $8.00 each and most are the cheaper thin ones. Don't be fooled by the price. The big home improvement stores rip you off for these discs and they are usually thinner. These discs are balanced fairly good, and the price is good. The only reason I gave them 4 stars is, it seems that they might vibrate some when they are used aggressively. I use them mostly for pre-cleaning mill scale on steel before welding. I know most of you old hands know how hard mill scale is to remove. (But for newbies, for scale removal where some scratches are not important, start out with a 36 grit wheel). These also work well on rust, grinding down welds and just about anything else. Always wear good eye protection, a proper fitting respirator, and hearing protection when using grinders. I wished I would have taken better care of my ears when I was younger. How many of you older guys agree with me on that? Also don't let others around you breath this dust. Any way I will update again after I have used the rest of these in a few weeks. So far they are recommended. Sorry, I don't want to sound like a know it all, but I have used many of these and I wanted to pass on the info. Thank you for reading.Update:5/3/17I just received my second order of 10 discs. The first ones worked pretty good for the price so I reordered them. Good discs.