【High Load Capacity】：V-grooved wheels are made of cast iron and these wheels in different sizes are designed for high load capacity. Engineered to hold heavy loads of up to 600 lbs per wheel. 【V-Shaped Groove Design】：Most of these wheels have relief in the "V" shaped grooves, which makes the wheel a "self-cleaning" tool while also ensuring proper weight distribution.Since they are modeled after the traditional rail car wheel, these casters can be used transporting units on steel raised or iron tracks. This can prove extremely useful, in case you are transporting extremely fragile items. 【High Temperature Resistance】:V-Groove wheels can be used in heavy-duty assembly line plants where high temperature soldering and welding is done. Or it can be used in food processing, car manufacturing, or any other type of building that results in extreme heat. Because they hold up so well in rough conditions and heat, V-Groove wheels are a highly economical option in a variety of industries. 【Widely Used】：V-groove wheels are widely used in small business industrial environments for all kinds of equipment such as rolling saw mills, ovens, ventilation equipment, measurement equipment etc., to roll tracks. They are also utilized by private consumers for a range of applications, such as rolling, sliding gates. 【WE CARE FOR YOU】：Heavy duty casters come with friendly customer service. If you have any questions, you can contact us for a solution, we will definitely provide you with a satisfactory solution. V-Groove Wheel - cast Iron Wheel