BOWER sells FRO. Related information about FRO includes: Model FRO Inner diameter: 1.91 mm Outer diameter: 3.967 mm Thickness: 5.156 mm Series: Deep groove ball bearing. If you want to know more about FRO related information, you can consult online or call the hotline , we will serve you in detail. FRO has a wide range of uses. FRO is mainly used in engineering machinery, machine tools, automobiles, metallurgy, mining, petroleum, machinery, electric power, railways and other industries. The price of FRO sold by our company is reasonable and we look forward to cooperating with you.