BOWER sells HK4520. Related information about HK4520 includes: Model HK4520 Inner diameter: 45 mm Outer diameter: 52 mm Thickness: 20 mm Series: Needle bearing. If you want to know more about HK4520 related information, you can consult online or call the hotline , we will serve you in detail. HK4520 has a wide range of uses. HK4520 is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of HK4520 sold by our company is reasonable and we look forward to cooperating with you.