BOWER sells HK4020. Related information about HK4020 includes: Model HK4020 Inner diameter: 40 mm Outer diameter: 47 mm Thickness: 20 mm Series: Needle bearing. If you want to know more about HK4020 related information, you can consult online or call the hotline , we will serve you in detail. HK4020 has a wide range of uses. HK4020 is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of HK4020 sold by our company is reasonable and we look forward to cooperating with you.