4pcs Diamond Hand Polishing Pads for Ceramic Tile Glass Grinding,Sanding Blocks Polishing 60#,100#,200#,400#

Used to hone carbide rotary hammer bits these pads extend the life each bit. The 60 grit is great to remove some of the hardened steel that holds the carbide bit to give better access to the carbide itself and the 100 grit plus is nice for the honing process. I've sharpened my bits multiple times doubling and tripling the life of each bit (so far) for about 6 minutes of sanding per bit. This saves money on new drills, but is also reduces waste and throwing drill bits away after dulling once. If these pads can hone carbide, 8.5 on the Mohs scale, it proves they are a diamond product which is a 10 on the same scale. I have no doubt they will sand any other material I may use them for. I have not noticed any erosion of the sanding surface yet, I've only used these on the drills which uses the edge of the pad. The pads suffer near the edges but that is expected when sanding hard and rough surface. In time I may try and trim the pad smaller to expose new diamond material if the edge ever wears out. The image shows three used bits. Two I have resharpened on the right (more than once) and a dull bit is on the left.

I am trying my hand at patching some holes in my basement walls so we can paint them, making it a great place to live. I patched the holes with concrete patch, but it was a little rough. These pads said they would sand concrete, so I decided to give them a try. It took a little strength, but they worked! Using the #60, I was able to take off the rough edges. Then, using the #100 & #200, it gave a nice smooth finish. I highly recommend these--very easy to use and quite effective.

Great little set of blocks, these work great on ceramic artisanal tiles, all the grits come in handy and leave a nice finish. These four are cheaper than a single grit sponge of the big brands at the orange or blue stores!

Nice product that performs well and takes the edge off of sharp tile

They work great no complaints

I work with Slate and tile and these are good for hand grinding and sanding! Very durable.

Work pretty good, make edges looks like a pro

I use these to sand the edges of rough mosaic pieces. I have used them dry and in water and they work well. They are easy to hold and can even work around edges once tiles are glued. The only issue I have experienced they rust very easily and quickly, which interferes with the performance and can damage surfaces they are in contact with. To avoid this, make sure to dry them right away and place them metal side up when done.