12 Volt DC Brushed Permanent Magnet Motor 30 Watt Mini High Speed Electric Motor for DIY Generator Applications with CW/CCW Rotation 3500 RPM

DC Motor DC High Speed Motor 30W High Speed CW/CCW Permanent Magnet DC Motor Brushed DC Motor Mini Electric Motor for DIY Generator(12V 3500rpm)

YaeTek 24V DC 350W Permanent Magnet Electric Motor Generator DIY for Wind Turbine PMA

Houkr GT2 Aluminum Timing Belt Idler Pulley Bearing 20&60 Teeth Width 8mm Born Synchronous Wheel, with a Perimeter 200mm Width 6mm Belt and a M4 Allen Wrench, for 3D Printer.