6 Set DC Motor Kit Rectangular Electric 15-3V 24000RPM Mini with 86 Pcs Plastic Gears 2 x AA Battery HolderMotor Mounting BracketBoat Rocker SwitchShaft Propeller for DIY Science Projects

Shaft Propeller Aperture:2mm/0.078; Diameter:80mm/3.15; Number of vane:4 vane 3V DC Motor24000 RPM Rated SpeedBody Diameter:27mm/1.06"Length;38mm/1.46";Mounting Hole Distance(center to center):15mm/0.59"Shaft Size:10×2.0mm/0.39"x0.08"(L*D) Manufactured by Poraxy. Perfect for mini fan carselectric toys and science experiments etc. Work perfectly with many power sources batteries and solar cells. Package including:6x DC motor6x battery holder6x motor mounting bracket6x boat rocker switches2x electronic wire86 pcs plastic gears(Random Color) 5 pcs 4 vanes propeller2pcs 3 vanes propeller 1pcs Base plate and 1pcs 100cm2 Heat shrink tube Pay attention: Please note that this is a diy accessory kit that cannot be a complete model.Please read the instructions or pictures carefully use the correct circuit diagram to avoid short circuit short circuit will produce high temperature and cause the battery Holder box to melt