This driveshaft is made from 2-1/2” O.D. x .090 wall D.O.M. steel tubing, forged steel weld yokes with 1310 series u-joints and balanced. Ideal for use in sportsman, modified other limited horsepower applications. Rebuildable. WARNING: Not For Street Or Drag Racing Use. Note: Custom Lengths Available Max 50” (No Exceptions) Minimum 16”