1、Anti Deformation: Front and rear axles have high quality internal gears and transmission shafts, with high strength, not easy to deform, and durable. 2、High Quality Material: Front and rear door axle is made of high quality aluminum alloy material, CNC accuracy machining, lightweight and beautiful. 3、Standard Size: RC axles are accurately sized to ensure a perfect fit, stable performance, universal design, compatible for MN 90 99S series RC cars. 4、Easy To Install: Replacement door axle, easy to install, directly replace the original plastic door axle, fixed with screws, stable and not easy to loosen. 5、Upgrade Parts: RC front and rear axles, professional upgrade accessories for upgrading your RC car, making your car more attractive and cool. Item Type: RC Axles Material: Aluminum Alloy Front Axle Length: Approx. 145mm/5.7in Rear Axle Length: Approx. 145mm/5.7in Compatible: Universal for MN 90 99S Series 1 x Front Axle 1 x Rear Axle 10 x Screw