BOWER sells NA4904. Related information about NA4904 includes: Model NA4904 Inner diameter: 20 mm Outer diameter: 37 mm Thickness: 17 mm Series: Needle bearing. If you want to know more about NA4904 related information, you can consult online or call the hotline , we will serve you in detail. NA4904 has a wide range of uses. NA4904 is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of NA4904 sold by our company is reasonable and we look forward to cooperating with you.