72 PCS Plastic Gear Set Pulley Belt Worm LED DIY Hydro Electric Project

72 Pcs Plastic Gear Set DIY Belt Pulley Worm Belt  Set various types of combinations of gears, Axle, Switch, Tie Belt, 10 Core Wire, LED, Crocodile Clip, Terminar, Terminar Cap etc. meet your DIY needs DIY model, it is perfect for Hydro Electric Water Project. Package includes: 72 Pcs Plastic Gear Set DIY Belt Pulley Worm Belt  Set various types of combinations of gears, Axle, Switch, Tie Belt, 10 Core Wire, LED, Crocodile Clip, Terminar, Terminar Cap etc. meet your DIY needs DIY model, it is perfect for Hydro Electric Water Project.