WIL Aluminum Wheels are made from High strength Alloy (6061), procured from world renowned suppliers.Rotary Forged and spun for high strength from a single piece alloy billet.Subjected to special heat treatment process that gives High strength and Elongation.Completely CNC machined to give great control over dimensions, trueness and appearance. Pre-stressed at important areas to provide Superior fatigue strength.Polished to a mirror finish with Robotic Polishing machine