Hilitand 6V 4000rpm Permanent Magnet DC Motors 31ZY CW/CCW Permanent for DIY Generator

Hilitand CW/CCW 31ZY 6V 4000rpm DC Brush Motor Permanent Magnet DC Motor High Speed Electric Gear Motor for DIY Generator

Zeberoxyz 2PCS Set GT2 Synchronous Wheel 20&60 Teeth 5mm Bore Aluminum Timing Pulley with 2PCS Length 200mm Width 6mm Belt (20-60T-5B-6)

4Pcs Flange Coupling Connector, Rigid Guide Model Coupler Accessory, Shaft Axis Fittings for DIY RC Model Motors (5mm)