Note: various hollow rivet nylon castors with different specifications, hardness and performance can be customized according to the needs of customers. Product features 1. In order to rotate flexibly, double steel ball track is used; 2. For durability, install bearings; 3. Corrosion resistant surface treatment processes such as galvanizing and chromium plating; 4. Use nylon nuts to prevent loosening. 5.Diameter of hollow rivet Φ12mm 6.It can be equipped with metal side brake and metal double brake Nylon wheels and plastic as like as two peas, they are very similar in appearance. So many people think that nylon wheels are ordinary casters, but they are not. The price of nylon casters is more than twice that of plastic. From the price alone, the quality of nylon casters is better than that of plastic casters. However, due to their similar appearance, many manufacturers only pay attention to price rather than quality based on cost considerations. The color of the finished nylon wheel is light yellow or off white. Because nylon is a polymer material, it has high mechanical strength and can reach the strength of metal materials. A very simple identification method is to hit it with a hammer to test its hardness. If the wheel you buy is hard, it is nylon wheel. On the contrary, if it is soft, it is plastic wheel.