Materials: Drive Shaft: Metal M5 Nut: 304 Stainless Steel 12mm Hex Adapters: Aluminum Alloy, Thickness is 7mm. Features: PREMIUM MATERIALThe drive shaft is made of anti -rust and anti -corrosion metal material, can withstand high strength impact, strong and durable. SPECIAL DESIGNIncrease the smooth degree and angle. Retractable design provides more space and allows the rocker to swing better. EASY TO INSTALL Lightweight, convenient to carry, Comes with mounting accessories, easy to use, you can directly use them on your RC car model. GOOD CHOICECompatible with 1/10 scale Slash PQ727 Short Truck RC car etc. Idea for model and RC enthusiasts. Packages: 2 x Front Drive Shafts, 2 x Rear Drive Shafts, 4 x Hex Adapters with Pin, 4 x M5 Nuts, 8 x Screws.