BOWER sells HK4012B. Related information about HK4012B includes: Model HK4012B Inner diameter: 40 mm Outer diameter: 47 mm Thickness: 12 mm Series: Needle bearing. If you want to know more about HK4012B related information, you can consult online or call the hotline , we will serve you in detail. HK4012B has a wide range of uses. HK4012B is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of HK4012B sold by our company is reasonable and we look forward to cooperating with you.