Flexible Shaft Machine 22,000 RPM 110V/60Hz 1/4HP Jewelry Making Sanding Cleaning Sanding Drilling Polishing Tool At 1/4hp, this flexible shaft machine is perfect for cleaning, polishing, sanding, drilling, and much more Fully interchangeable unit with standard style handpiece Variable speeds up to 22,000 RPM Comes in durable hard case 110V/60Hz