MW solid funny car / altered class driveshafts are designed to be used in vehicles with solid mounted rear ends and where a single coupler is not long enough. The driveshafts are machined out of 4340 alloy steel and Austemper heat treated . Normally shafts of this type have 4" of full spline on both ends This feature allows the shaft to be shortened up to 2" on each end. 1-1/2" diameter, 35 spline, 28" long,