Description:5\/8 Inch Transfer Bearing Unit Conveyor Roller Wheel Mounted Ball Bearing <br>Specification:<br> Material: Metal<br> Total Size: 50mmx 29mm x 21mm\/(L*W*H)<br> Ball Dia: 15.875mm( 5\/8'')<br> Screw Dia: 4.2mm<br> Weight: 41g<br>  <br>   Feature:   Smooth moving，low friction，high performance and long life.       Package Included:   1x Ball Bearing       More Details: