In this video I gonna show you more clearer about Universal Join and back box Rear Axle. This rear axle will connect with one more rear axle as a double rear axle for remote control off-road heavy truck like a real truck with the strong power of machine. Simple Material : Plastic Spur Gear (Spur gear T-13, Spur Crown T-23). Wire metal (Wire metal of moto-cycle wheel). +Rear Box Cardboard (ASUS Computer box if can). Bamboo Chopsticks (Can role the cardboard instead). Super Glue (Normal Super Glue). +Universal Join Old pen (Long pen that has a strength hole). wire net of fan. This video will help you on your work. Please click Subscribe my channel for creative video. Like, Share and Command. Thank for watching.