1)Material: High Manganese Steel 2)Colour: Yellow 3)Technology: Forging, Casting 4)Part No.:124-8237/124-8240 Bulldozer track rollers are designed for applications that call for the maximum wear resistance. We use good material to ensure quality and consistency. Strict quality management to produce effective and stable products, and meet customer's demand. Model No. Above is the sizes which are the most popular for your reference only, as a manufacturer, we can also produce the size according to your drawing, please feel free to contact us for any possible business, thank you and look forward to the co-operation with you. strong fumigated wooden pallets