To be honest in 3 years of making blades and about 5 budget sanders I've bought these, Honestly the best grinder I've used yet A word of warning you have to be careful when working well with the backs of your blades or it will eat your blades if you're not careful It also uses a direct drive instead of one secondary drive belt for the power rotation of the belts.. A very convenient feature is that you can put the lever in a horizontal position and use it as a bottom wheel to remove a large amount of material, and then turn the hex wrench to turn it into a vertical position and you can use its roller. Overall a great machine if you are looking to upgrade your coffee grinder or are just starting out with the mitg We supplied 80 grit belts and I had to use a fine sander to finish the case. I have informed the manufacturer of this issue, give them the leap of faith and say the quality control department missed it.