... Mini bench grinder high speed for buffing, for grinding variable speed, 0-10,000 rpm. 31" flexible-shaft attached Multitasking Grinder. ... . It's not as strong as a big bench grinder, but it's a very cool hobby tool! ... Product DescriptionMultitasking Grinder. Give this adaptable Multigrinder a whirl, and ... 's not as strong as a big bench grinder, but it's a very cool hobby tool!