I bought it by making my own buff machine. I bought A-38 first, but I repurchased it by pulley minimum: 95 mm. Although it seems to be able to use with confidence, the price is high compared to A, is not it?
In company B's energy savings, it was completely replaced with a blower whose vibration and noise increased drastically under the same conditions. It seems that M company's products are excellent, such as uniformity of tension and durability.