Miniature Ball Bearing, Bearing Industry Number 688, Bore Diameter 8 mm, Closure Double Shielded, For Environment Caustic, Chemical, Food and Beverage, Pharmaceutical, Poultry, Outer Ring Width 5 mm, Outside Diameter 16 mm, Ring Material Stainless Steel, System of Measurement Metric, Cage Material Stainless Steel, ABEC Rating 1, Cage Material Grade 304, Cage Type Shielded, Dynamic Radial Load Capacity 170 lbf, Flange Diameter 18 mm, Flange Thickness 1 mm, Flange Type Flanged