The processing technology of this product is cutting blanking stretching forming 1 punching forming 2 welding turning polishing. This product is widely used in agricultural machinery, industrial machinery, trucks, forklifts and so on. The outer diameter of the product is2.59in. The inner diameter is 1.7in. The height was 6.75 in. The whole product is packed after soaking in antirust oil. There are plastic bags in the box to prevent the excessive antirust oil from polluting the carton. The products are neatly placed in cartons, and cartons are placed in special standard trays, with good storage environment.