1. Semi-axle Gear, 812W35106-0055 2. Material SAE4320H 3. For MCY Axle (Benz axle) This series of products are differential gears designed for the MCY 13 axles or Benz axles. Specification of heat treatment, A.O.SPEC.150-D; Core tensile strength, 880-1250N/mm2 retained austenite (max) 30%, Ferrite(max) 10%.