Dremel 9100 21 fortiflex heavy duty flexshaft and hanging motor dremel f0139100jb p the dremel fortiflex heavy duty flexshaft and hanging motor 9100 21 is the perfect tool for use when a combination of power and precision is required br br this high quality tool consists of a powerful hanging motor 300w a patented heavy duty flexible shaft an exchangeable precision hand piece and a foot pedal for variable speed control 0 to 20 000rpm making it the ideal tool for stationary