BOWER sells HK4020B. Related information about HK4020B includes: Model HK4020B Inner diameter: 40 mm Outer diameter: 47 mm Thickness: 20 mm Series: Needle bearing. If you want to know more about HK4020B related information, you can consult online or call the hotline , we will serve you in detail. HK4020B has a wide range of uses. HK4020B is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of HK4020B sold by our company is reasonable and we look forward to cooperating with you.