Most discs will not stick to the grinder for more than a few minutes. In fact, some of them are thrown out of the grinder within seconds of turning them on. I thought it was a pad for my Bosch grinder so I bought a new one. Same problem. I then tried it with a higher quality disc and viola! No more trouble. These discs are great if you intend to use them for block sanding, but purchase better quality discs for use with a random orbital sander.
Sunjoyco 4-Inch Diamond Cup Grinding Wheel - 12-Segment Heavy Duty Turbo Row Disc For Concrete, Granite, Stone, Marble, Masonry And More
15 Review
DEWALT DW8424B5 2 Inch 0 045 Inch Cutting
10 Review
Get A Perfectly Smooth Finish With SUNJOYCO 4" Heavy Duty Turbo Row Diamond Cup Grinding Wheel For Stone, Masonry, And Concrete
12 Review
7.75" Rolling GATE Carrier Wheels: For Chain Link Fence Rolling Gates - Rut Runner
11 Review