Superior Durability & Corrosion Resistance: Crafted from high-strength forged steel for the rod and hardened steel for the ball studs, ensuring exceptional toughness and resistance to bending, cracking, and impact. The surface is treated with black E-coating to prevent rust, road salt, and corrosion, while the heavy-duty rubber dust boot seals the ball joint, blocking dust, water, and debris to extend service life.