1Fitment: 24T spline rear axle wheel hubs are fit for 125cc 150cc 200cc Go Kart ATV Quad, please confirm whether your model is applicable before buying. 2Durable Material: Heavy duty rear axle rim hub is forged from high hardness steel alloy, solid filling inside, heat treated surface to ensure overall durability. 3Excellent Performance: The 4 stud 24T rear hub shaft can effectively face wet mud puddles and outdoor conditions to improve the vehicle's driving performance. 4Size: The number of axle teeth of the rear axle rim hub is 24T, and the axle diameter is 25mm / 1in. Please check the size whether it is applicable before purchasing. 5Simple Installation: Our product can be used in maintenance and modification of the old rear axle rim hub of the original vehicle, and the installation is simple and does not require redundant modifications.