Our products are made of 45Mn to 50Mn steel, which will go through a high frequency induction modulation process in order to obtain HRC50-55. This material, chosen for its quality and durability, meeting the requirements of heavier weights as well as the precision of our production lines, are the main competitiveness of our bottom rollers. All track roller shells are assembled with O-rings, bushings, seals, shaft and other small parts. Each step is strictly inspected to ensure pressure resistance and tensile resistance.