Material:Aluminum
outer diameter:76.2
inner diameter:50.8
thickness:12.7

our factory has more than fifteen years ,  we have made a good success in this field. We have been doing business with many famous companies, Our products exported to all over the world. We keep in mind that we should take every issue of our clients in the first place. And promise to provide high quality service to all of them.we have advanced technician and morden equipment.our factory is deveolping,the scale is broaden. Should you want to know more about our company and products, please visit our websit or contact me directly.