Features: Permanent Magnets motors can be used in small cutting tables, grinders and other mechanical equipment. Motor is small in size but powerful in function, can run at highly speed, runs smoothly without noise, large torques, and is safe to use. The stators winding of the motor is make of coppers wire, which have low heat generation, low loss, good conductivity and stable operation of the motor. The electric motor support clockwise and counterclockwise control, and the rotation direction can be switched without removing wire. This permanent Magnets motor is rate at 30W, great for DIY generators, replaceable carbon brushes, very practical. Specifications: Materials: Stainless steels Voltage: 12V/24V(Optional) Size: about 10.9x5.1cm/4.25x2.01inch Power: 30W 12V Speed: 3500RPM 24V Speed: 7000RPM Package Includes: 1pc Electric Permanent Magnets Motor note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.