lengthening 141 rear axle head used for China'

main parameter of this product: diameter ofthe back surface:84mm number fo the spline:20 means:casting or forging more details: it's upper part is trapezoid used for China's Liberation truck difference between itand 140 rear axle head: the latter's upper part is rectangle difference between it and 141 rear axle head: the former is longer than the latter. comparative pictures of them: lengthening 141 rear axle head: 140 rear axle head: 140 rear axle head: