Here's the specs:

Speedybnz Camber Arms are constructed out of Drawn Over Mandrel (DOM) steel tubing which results in a precise steel tube with accurate dimensioned wall thickness. The ends of the tubing are swedged to reduce the end diameter and to strengthen the tubing ends where the threads are cut into the steel. The steel tubing is Zinc coated to enhance corrosion resistance.

The rod end bearings are oversized and built using Chrome Moly steel and then chrome plated for corrosion resistance. The bearing race is filled with a Kevlar/Teflon combination of materials to eliminate noise in the bearing often occurring in cheaper rod ends and the Teflon helps to self lubricate the bearing race.

Stainless steel inserts are custom machined to reduce the rod end through hole diameter and allow seamless fitment to a wide range of Mercedes-Benz cars. The stainless steel inserts will not rust or corrode.

When the camber arms are assembled an anti-seize paste is used on the threads to allow the tubing to remain free of corrosion for easy installation and adjustment after years of use. Left and right handed threads are used to allow the camber arm to remain on the car for easy adjustment.