Used set of axle shafts out of a 1986 Chevrolet K10 truck with a 10-bolt rear axle. Should fit 81-87 square body Chevy and GMC 1/2 ton 4x4 trucks, K5 Blazer, Jimmy, Suburban. They are 31.5” long to the wheel mounting surface and are 28 spline, for 6-lug wheels. $50 for the pair in Colchester, VT.