SANDSTONE GRINDING | STONE RESTORATION
The grinding stone from Oregon gets a rating of 2200 max RPM and ideal for mowers blades. The stone has 8" outer diameter and thickness of 1". The bore is 5/8," and the 36 grit is perfect for sharpening the edges. After a lot of contemplation, my choice is the Benchmark Abrasives 4.5" X7.8" Flap Disc Grinding Wheel. The product is ...