LR50/6NPPU Track Roller 2-Row Bearing Sealed 6x19x9 Track BearingLR50 6NPPU Track Roller Double Row Ball Bearing 6mm x 19mm x 9mm One Bearing LR50 6NPPU Track Roller Double Row Ball Bearing, bearing is a Sealed, Bearing inner diameter is 6mm, Bearing outer diameter is 19mm and Bearing width is 9mm. LR50 6NPPU Bearing Track Roller Double Row Bearing Size: 6mm x 19mm x 9mm Bearing inner Diameter: 6mm Bearing outer Diameter: 19mm Bearing width : 9mm Dynamic Load Rating Cr: 2700 N Static Load Rating Cor: 1370 N